Consider the following example,
func test(a, b float64, x uint64) uint64 {
if a < b {
x = 0
}
return x
}
func main() {
fmt.Println(test(1, math.NaN(), 123))
}
The output is 0, but the expectation is 123.
This is because the rewrite rule
(CSEL [cc] (MOVDconst [0]) y flag) => (CSEL0 [arm64Negate(cc)] y flag)
converts
FCMP NaN, 1
CSEL MI, 0, 123, R0 // if 1 < NaN then R0 = 0 else R0 = 123
to
FCMP NaN, 1
CSEL GE, 123, 0, R0 // if 1 >= NaN then R0 = 123 else R0 = 0
But both 1 < NaN and 1 >= NaN are false. So the output is 0, not 123.
The root cause is arm64Negate not handle negation of floating comparison
correctly. According to the ARM manual, the meaning of MI, GE, and PL
are
MI: Less than
GE: Greater than or equal to
PL: Greater than, equal to, or unordered
Because NaN cannot be compared with other numbers, the result of such
comparison is unordered. So when NaN is involved, unlike integer, the
result of !(a < b) is not a >= b, it is a >= b || a is NaN || b is NaN.
This is exactly what PL means. We add NotLessThanF to represent PL. Then
the negation of LessThanF is NotLessThanF rather than GreaterEqualF. The
same reason for the other floating comparison operations.
Fixes#43619
Change-Id: Ia511b0027ad067436bace9fbfd261dbeaae01bcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/283572
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Keith Randall <khr@golang.org>
I have a real 7,000-line Go program (not so big)
that took over two minutes to report a trivial init cycle.
I thought the compiler was in an infinite loop but
it was actually just very slow.
CL 170062 rewrote init cycle reporting but replaced
a linear-time algorithm with an exponential one:
it explores all paths through the call graph of functions
involved in the cycle.
The net effect was that Go 1.12 took 0.25 seconds to load,
typecheck, and then diagnose the cycle in my program,
while Go 1.13 takes 600X longer.
This CL makes the new reporting code run in linear time,
restoring the speed of Go 1.12 but preserving the semantic
fixes from CL 170062.
Change-Id: I7d6dc95676d577d9b96f5953b516a64db93249bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/282314
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
When running go tool compile,
go tool is running compile as a subprocess.
Killing go tool with Process.Kill leaves the subprocess behind.
Send an interrupt signal first, which it can forward on
to the compile subprocess.
Also report the timeout in errorcheck -t.
Change-Id: I7ae0029bbe543ed7e60e0fea790dd0739d10bcaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/282313
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Current optimization: When we copy a->b and then b->c, we might as well
copy a->c instead of b->c (then b might be dead and go away).
*Except* if a is a volatile location (might be clobbered by a call).
In that case, we really do want to copy a immediately, because there
might be a call before we can do the a->c copy.
User calls can't happen in between, because the rule matches up the
memory states. But calls inserted for memory barriers, particularly
runtime.typedmemmove, can.
(I guess we could introduce a register-calling-convention version
of runtime.typedmemmove, but that seems a bigger change than this one.)
Fixes#43570
Change-Id: Ifa518bb1a6f3a8dd46c352d4fd54ea9713b3eb1a
Reviewed-on: https://go-review.googlesource.com/c/go/+/282492
Trust: Keith Randall <khr@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
For the example in #43551, before late call expansion, the OpArg type is
decomposed to int64. But the late call expansion is currently decompose
it to "x.Key" instead.
This CL make expand_calls decompose further for struct { 1-field type }
and array [1]elem.
This matches the previous rules for early decompose args:
(StructSelect (StructMake1 x)) => x
(ArraySelect (ArrayMake1 x)) => x
Fixes#43551
Change-Id: I2f1ebe18cb81cb967f494331c3d237535d2859e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/282332
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
In issue11656.go, it tests that if the runtime can get a
reasonable traceback when it faults at a non-function PC. It does
it by jumping to an address that contains an illegal or trap
instruction. When it traps, the SIGTRAP crashes the runtime.
This CL changes it to use an instruction that triggers SIGSEGV.
This is due to two reasons:
- currently, the handling of bad PC is done by preparePanic,
which is only used for a panicking signal (SIGSEGV, SIGBUS,
SIGFPE), not a fatal signal (e.g. SIGTRAP).
- the test uses defer+recover to get a traceback, which only
works for panicking signals, not fatal signals.
Ideally, we should handle all kinds of faults (SIGSEGV, SIGBUS,
SIGILL, SIGTRAP, etc.) with a nice traceback. I'll leave this
for the future.
This CL also adds RISCV64 support.
Fixes#43283.
Change-Id: I5e0fbf8530cc89d16e05c3257d282bc1d4d03405
Reviewed-on: https://go-review.googlesource.com/c/go/+/279423
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
For #11656
For #43283
Change-Id: I1fcf2b24800f421e36201af43130b487abe605b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/279312
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Previously, reassigned was failing to detect reassignments due to
channel receives in select statements (OSELRECV, OSELRECV2), or due to
standalone 2-value receive assignments (OAS2RECV). This was reported
as a devirtualization panic, but could have caused mis-inlining as
well.
Fixes#43292.
Change-Id: Ic8079c20c0587aeacff9596697fdeba80a697b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/279352
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
The issue11656 code was using the trap instruction as a PC value,
but it is intended to call a PC value that contains the trap instruction.
It doesn't matter too much as in practice the address is not
executable anyhow. But may as well have the code act the way it
is documented to act.
Also, don't run the test with gccgo/GoLLVM, as it can't work.
The illegal instruction will have no unwind data, so the unwinder
won't be able to get past it. In other words, gccgo/GoLLVM suffer
from the exact problem that the issue describes, but it seems insoluble.
For golang/go#11656
Change-Id: Ib2e50ffc91d215fd50e78f742fafe476c92d704e
Reviewed-on: https://go-review.googlesource.com/c/go/+/278473
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The language spec only requires a signed binary exponent of 16 bits
for floating point constants. Permit a "exponent too large" error for
larger exponents.
Don't run test 11326b with gccgo, as it requires successful compilation
of floating point constants with exponents that don't fit in 16 bits.
Change-Id: I98688160c76864aba525a151a14aaaf86bc36a6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/279252
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Change the run.go driver to recognize the "gc" build tag.
Change existing tests to use the "gc" build tag if they use some
feature that seems specific to the gc compiler, such as passing specific
options to or expecting specific behavior from "go tool compile".
Change tests to use the "!gccgo" build tag if they use "go build" or
"go run", as while those might work with compilers other than gc, they
won't work with the way that gccgo runs its testsuite (which happens
independently of the go command).
For #43252
Change-Id: I666e04b6d7255a77dfc256ee304094e3a6bb15ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/279052
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The gofrontend code sees that the denominator is not zero,
so it computes the values. Dividing zero by a non-zero value
produces zero. The language spec doesn't require any of these
cases to report an error, so make the errors compiler-specific.
Change-Id: I5ed759a3121e38b937744d32250adcbdf2c4d3c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/278117
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
The bug429 tests is an exact duplicate of TestSimpleDeadlock in the
runtime package. The runtime package is the right place for this test,
and the version in the runtime package will run faster as the build
step is combined with other runtime package tests.
Change-Id: I6538d24e6df8e8c5e3e399d3ff37d68f3e52be56
Reviewed-on: https://go-review.googlesource.com/c/go/+/278173
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The language spec only requires that floating point values be
represented with 256 bits, which is about 1e75. The issue11371 test
was assuming that the compiler could represent 1e100. Adjusting the
test so that it only assumes 256 bits of precision still keeps the
test valid, and permits it to pass when using the gofrontend.
Change-Id: I9d1006e9adc9438277f4b8002488c912e5d61cc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/278116
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
With the gc compiler the import path implies the package path,
so keeping a canonical path is important. With the gofrontend
this is not the case, so we don't need to report this as a bug.
Change-Id: I245e34f9b66383bd17e79438d4b002a3e20aa994
Reviewed-on: https://go-review.googlesource.com/c/go/+/278115
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The pattern in NNN.dir directories is that if we have a.go,
the other files import "./a". For gc it happens to work to use a path,
but not for gofrontend. Better to be consistent.
Change-Id: I2e023cbf6bd115f9fb77427b097b0ff9b9992f17
Reviewed-on: https://go-review.googlesource.com/c/go/+/278113
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
fixedbugs/issue26416.go:24:16: error: unknown field ‘t1f1’ in ‘t2’
fixedbugs/issue26416.go:25:16: error: unknown field ‘t1f2’ in ‘t3’
fixedbugs/issue26416.go:26:16: error: unknown field ‘t2f1’ in ‘t3’
fixedbugs/issue26616.go:15:9: error: single variable set to multiple-value function call
fixedbugs/issue26616.go:9:5: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:12:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:13:13: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:15:9: error: incompatible type in initialization (multiple-value function call in single-value context)
fixedbugs/issue26616.go:14:11: error: incompatible types in assignment (multiple-value function call in single-value context)
fixedbugs/issue26855.go:23:12: error: incompatible type for field 1 in struct construction
fixedbugs/issue26855.go:27:12: error: incompatible type for field 1 in struct construction
fixedbugs/issue25958.go:14:18: error: expected ‘<-’ or ‘=’
fixedbugs/issue25958.go:15:35: error: expected ‘<-’ or ‘=’
fixedbugs/issue28079b.go:13:9: error: array bound is not constant
fixedbugs/issue28079b.go:16:22: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue28079c.go:14:22: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue28450.go:9:19: error: ‘...’ only permits one name
fixedbugs/issue28450.go:10:18: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:16: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:11:24: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:13:25: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:15:19: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:21: error: ‘...’ must be last parameter
fixedbugs/issue28450.go:16:31: error: ‘...’ must be last parameter
fixedbugs/issue28268.go:20:1: error: method ‘E’ redeclares struct field name
fixedbugs/issue28268.go:19:1: error: method ‘b’ redeclares struct field name
fixedbugs/issue27356.go:14:14: error: expected function
fixedbugs/issue27356.go:18:9: error: expected function
fixedbugs/issue29855.go:13:11: error: unknown field ‘Name’ in ‘T’
fixedbugs/issue27938.go:14:15: error: expected package
fixedbugs/issue27938.go:18:13: error: expected package
fixedbugs/issue27938.go:22:13: error: expected package
fixedbugs/issue27938.go:22:9: error: expected signature or type name
fixedbugs/issue29870b.go:13:9: error: ‘x’ declared but not used
fixedbugs/issue30085.go:10:18: error: wrong number of initializations
fixedbugs/issue30085.go:11:21: error: wrong number of initializations
fixedbugs/issue30087.go:10:18: error: wrong number of initializations
fixedbugs/issue30087.go:11:11: error: number of variables does not match number of values
fixedbugs/issue30087.go:12:9: error: wrong number of initializations
fixedbugs/issue30087.go:13:9: error: wrong number of initializations
fixedbugs/issue28926.go:16:14: error: use of undefined type ‘G’
fixedbugs/issue28926.go:18:14: error: use of undefined type ‘E’
fixedbugs/issue28926.go:22:24: error: use of undefined type ‘T’
fixedbugs/issue30722.go:13:13: error: invalid numeric literal
fixedbugs/issue30722.go:14:13: error: invalid numeric literal
fixedbugs/issue30722.go:15:13: error: invalid numeric literal
fixedbugs/issue33308.go:12:19: error: invalid context-determined non-integer type for left operand of shift
fixedbugs/issue33386.go:16:9: error: expected operand
fixedbugs/issue33386.go:22:9: error: expected operand
fixedbugs/issue33386.go:26:17: error: expected operand
fixedbugs/issue33386.go:27:18: error: expected operand
fixedbugs/issue33386.go:28:29: error: expected operand
fixedbugs/issue33386.go:15:17: error: reference to undefined name ‘send’
fixedbugs/issue33386.go:27:13: error: reference to undefined name ‘a’
fixedbugs/issue33386.go:21:19: error: value computed is not used
fixedbugs/issue33460.go:34:10: error: duplicate key in map literal
fixedbugs/issue33460.go:21:9: error: duplicate case in switch
fixedbugs/issue33460.go:24:9: error: duplicate case in switch
fixedbugs/issue33460.go:25:9: error: duplicate case in switch
fixedbugs/issue32723.go:12:14: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:13:13: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:16:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:17:16: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:18:15: error: invalid comparison of non-ordered type
fixedbugs/issue32723.go:21:15: error: invalid comparison of non-ordered type
fixedbugs/issue35291.go:13:9: error: duplicate value for index 1
fixedbugs/issue38745.go:12:12: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:13:16: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:19: error: reference to undefined field or method ‘M’
fixedbugs/issue38745.go:17:9: error: not enough arguments to return
fixedbugs/issue41500.go:16:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:17:26: error: incompatible types in binary expression
fixedbugs/issue41500.go:18:22: error: incompatible types in binary expression
fixedbugs/issue41500.go:19:26: error: incompatible types in binary expression
fixedbugs/issue41575.go:23:6: error: invalid recursive type
fixedbugs/issue41575.go:9:6: error: invalid recursive type ‘T1’
fixedbugs/issue41575.go:13:6: error: invalid recursive type ‘T2’
fixedbugs/issue41575.go:17:6: error: invalid recursive type ‘a’
fixedbugs/issue41575.go:18:6: error: invalid recursive type ‘b’
fixedbugs/issue41575.go:19:6: error: invalid recursive type ‘c’
fixedbugs/issue41575.go:25:6: error: invalid recursive type ‘g’
fixedbugs/issue41575.go:32:6: error: invalid recursive type ‘x’
fixedbugs/issue41575.go:33:6: error: invalid recursive type ‘y’
fixedbugs/issue4215.go:10:9: error: not enough arguments to return
fixedbugs/issue4215.go:14:9: error: return with value in function with no return type
fixedbugs/issue4215.go:19:17: error: not enough arguments to return
fixedbugs/issue4215.go:21:9: error: not enough arguments to return
fixedbugs/issue4215.go:27:17: error: not enough arguments to return
fixedbugs/issue4215.go:29:17: error: too many values in return statement
fixedbugs/issue4215.go:31:17: error: not enough arguments to return
fixedbugs/issue4215.go:43:17: error: not enough arguments to return
fixedbugs/issue4215.go:46:17: error: not enough arguments to return
fixedbugs/issue4215.go:48:9: error: too many values in return statement
fixedbugs/issue4215.go:52:9: error: too many values in return statement
fixedbugs/issue41247.go:10:16: error: incompatible type for return value 1
fixedbugs/issue41440.go:13:9: error: too many arguments
fixedbugs/issue6772.go:10:16: error: ‘a’ repeated on left side of :=
fixedbugs/issue6772.go:17:16: error: ‘a’ repeated on left side of :=
fixedbugs/issue6402.go:12:16: error: incompatible type for return value 1
fixedbugs/issue6403.go:13:23: error: reference to undefined identifier ‘syscall.X’
fixedbugs/issue6403.go:14:15: error: reference to undefined name ‘voidpkg’
fixedbugs/issue7746.go:24:20: error: constant multiplication overflow
fixedbugs/issue7760.go:15:7: error: invalid constant type
fixedbugs/issue7760.go:16:7: error: invalid constant type
fixedbugs/issue7760.go:18:7: error: invalid constant type
fixedbugs/issue7760.go:19:7: error: invalid constant type
fixedbugs/issue7760.go:21:11: error: expression is not constant
fixedbugs/issue7760.go:22:11: error: expression is not constant
fixedbugs/issue7760.go:24:7: error: invalid constant type
fixedbugs/issue7760.go:25:7: error: invalid constant type
fixedbugs/issue7129.go:18:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:19:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:11: error: argument 1 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7129.go:20:17: error: argument 2 has incompatible type (cannot use type bool as type int)
fixedbugs/issue7150.go:12:20: error: index expression is negative
fixedbugs/issue7150.go:13:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:14:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:15:13: error: some element keys in composite literal are out of range
fixedbugs/issue7150.go:16:13: error: some element keys in composite literal are out of range
fixedbugs/issue7675.go:16:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:16:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:16:9: error: not enough arguments
fixedbugs/issue7675.go:16:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:18:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:24: error: argument 3 has incompatible type (cannot use type string as type float64)
fixedbugs/issue7675.go:18:28: error: argument 4 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:18:9: error: too many arguments
fixedbugs/issue7675.go:18:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:19:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:19:9: error: not enough arguments
fixedbugs/issue7675.go:19:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:21:11: error: argument 1 has incompatible type (cannot use type int as type string)
fixedbugs/issue7675.go:21:19: error: argument 3 has incompatible type
fixedbugs/issue7675.go:21:14: error: floating-point constant truncated to integer
fixedbugs/issue7675.go:23:14: error: floating-point constant truncated to integer
fixedbugs/issue7153.go:11:15: error: reference to undefined name ‘a’
fixedbugs/issue7153.go:11:18: error: incompatible type for element 1 in composite literal
fixedbugs/issue7153.go:11:24: error: incompatible type for element 2 in composite literal
fixedbugs/issue7310.go:12:13: error: left argument must be a slice
fixedbugs/issue7310.go:13:13: error: second argument must be slice or string
fixedbugs/issue7310.go:14:15: error: incompatible types in binary expression
fixedbugs/issue6964.go:10:13: error: invalid type conversion (cannot use type complex128 as type string)
fixedbugs/issue7538a.go:14:9: error: reference to undefined label ‘_’
fixedbugs/issue8311.go:14:9: error: increment or decrement of non-numeric type
fixedbugs/issue8507.go:12:6: error: invalid recursive type ‘T’
fixedbugs/issue9521.go:16:20: error: argument 2 has incompatible type
fixedbugs/issue9521.go:17:20: error: argument 2 has incompatible type (cannot use type float64 as type int)
fixedbugs/issue8385.go:30:19: error: argument 1 has incompatible type (type has no methods)
fixedbugs/issue8385.go:30:14: error: not enough arguments
fixedbugs/issue8385.go:35:9: error: not enough arguments
fixedbugs/issue8385.go:36:9: error: not enough arguments
fixedbugs/issue8385.go:37:10: error: not enough arguments
fixedbugs/issue8385.go:38:10: error: not enough arguments
fixedbugs/issue8385.go:39:10: error: not enough arguments
fixedbugs/issue8385.go:40:10: error: not enough arguments
fixedbugs/issue8385.go:41:13: error: not enough arguments
fixedbugs/issue8438.go:13:23: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:14:22: error: incompatible type for element 1 in composite literal
fixedbugs/issue8438.go:15:23: error: incompatible type for element 1 in composite literal
fixedbugs/issue8440.go:10:9: error: reference to undefined name ‘n’
Change-Id: I5707aec7d3c9178c4f4d794d4827fc907b52efb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/278032
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
fixedbugs/issue20602.go:13:9: error: argument must have complex type
fixedbugs/issue20602.go:14:9: error: argument must have complex type
fixedbugs/issue19323.go:12:12: error: attempt to slice object that is not array, slice, or string
fixedbugs/issue19323.go:18:13: error: attempt to slice object that is not array, slice, or string
fixedbugs/issue20749.go:12:11: error: array index out of bounds
fixedbugs/issue20749.go:15:11: error: array index out of bounds
fixedbugs/issue20415.go:14:5: error: redefinition of ‘f’
fixedbugs/issue20415.go:12:5: note: previous definition of ‘f’ was here
fixedbugs/issue20415.go:25:5: error: redefinition of ‘g’
fixedbugs/issue20415.go:20:5: note: previous definition of ‘g’ was here
fixedbugs/issue20415.go:33:5: error: redefinition of ‘h’
fixedbugs/issue20415.go:31:5: note: previous definition of ‘h’ was here
fixedbugs/issue19977.go:12:21: error: reference to undefined name ‘a’
fixedbugs/issue20812.go:10:13: error: invalid type conversion (cannot use type string as type int)
fixedbugs/issue20812.go:11:13: error: invalid type conversion (cannot use type int as type bool)
fixedbugs/issue20812.go:12:13: error: invalid type conversion (cannot use type string as type bool)
fixedbugs/issue20812.go:13:13: error: invalid type conversion (cannot use type bool as type int)
fixedbugs/issue20812.go:14:13: error: invalid type conversion (cannot use type bool as type string)
fixedbugs/issue21256.go:9:5: error: redefinition of ‘main’
fixedbugs/issue20813.go:10:11: error: invalid left hand side of assignment
fixedbugs/issue20185.go:22:16: error: ‘t’ declared but not used
fixedbugs/issue20185.go:13:9: error: cannot type switch on non-interface value
fixedbugs/issue20185.go:22:9: error: cannot type switch on non-interface value
fixedbugs/issue20227.go:11:11: error: division by zero
fixedbugs/issue20227.go:12:12: error: division by zero
fixedbugs/issue20227.go:13:12: error: division by zero
fixedbugs/issue20227.go:15:11: error: division by zero
fixedbugs/issue20227.go:16:12: error: division by zero
fixedbugs/issue19880.go:14:13: error: invalid use of type
fixedbugs/issue23093.go:9:5: error: initialization expression for ‘f’ depends upon itself
fixedbugs/issue21979.go:29:13: error: integer constant overflow
fixedbugs/issue21979.go:39:13: error: complex constant truncated to floating-point
fixedbugs/issue21979.go:10:13: error: invalid type conversion (cannot use type string as type bool)
fixedbugs/issue21979.go:11:13: error: invalid type conversion (cannot use type int as type bool)
fixedbugs/issue21979.go:12:13: error: invalid type conversion (cannot use type float64 as type bool)
fixedbugs/issue21979.go:13:13: error: invalid type conversion (cannot use type complex128 as type bool)
fixedbugs/issue21979.go:15:13: error: invalid type conversion (cannot use type bool as type string)
fixedbugs/issue21979.go:17:13: error: invalid type conversion (cannot use type float64 as type string)
fixedbugs/issue21979.go:18:13: error: invalid type conversion (cannot use type complex128 as type string)
fixedbugs/issue21979.go:20:13: error: invalid type conversion (cannot use type string as type int)
fixedbugs/issue21979.go:21:13: error: invalid type conversion (cannot use type bool as type int)
fixedbugs/issue21979.go:27:13: error: invalid type conversion (cannot use type string as type uint)
fixedbugs/issue21979.go:28:13: error: invalid type conversion (cannot use type bool as type uint)
fixedbugs/issue21979.go:34:13: error: invalid type conversion (cannot use type string as type float64)
fixedbugs/issue21979.go:35:13: error: invalid type conversion (cannot use type bool as type float64)
fixedbugs/issue21979.go:41:13: error: invalid type conversion (cannot use type string as type complex128)
fixedbugs/issue21979.go:42:13: error: invalid type conversion (cannot use type bool as type complex128)
fixedbugs/issue21988.go:11:11: error: reference to undefined name ‘Wrong’
fixedbugs/issue22063.go:11:11: error: reference to undefined name ‘Wrong’
fixedbugs/issue22904.go:12:6: error: invalid recursive type ‘a’
fixedbugs/issue22904.go:13:6: error: invalid recursive type ‘b’
fixedbugs/issue22921.go:11:16: error: reference to undefined identifier ‘bytes.nonexist’
fixedbugs/issue22921.go:13:19: error: reference to undefined identifier ‘bytes.nonexist’
fixedbugs/issue22921.go:13:19: error: expected signature or type name
fixedbugs/issue22921.go:17:15: error: reference to undefined identifier ‘bytes.buffer’
fixedbugs/issue23823.go:15:9: error: invalid recursive interface
fixedbugs/issue23823.go:10:9: error: invalid recursive interface
fixedbugs/issue23732.go:24:13: error: too few expressions for struct
fixedbugs/issue23732.go:34:17: error: too many expressions for struct
fixedbugs/issue23732.go:37:13: error: too few expressions for struct
fixedbugs/issue23732.go:40:17: error: too many expressions for struct
fixedbugs/issue22794.go:16:14: error: reference to undefined field or method ‘floats’
fixedbugs/issue22794.go:18:19: error: unknown field ‘floats’ in ‘it’
fixedbugs/issue22794.go:19:17: error: unknown field ‘InneR’ in ‘it’
fixedbugs/issue22794.go:18:9: error: ‘i2’ declared but not used
fixedbugs/issue22822.go:15:17: error: expected function
fixedbugs/issue25727.go:12:10: error: reference to unexported field or method ‘doneChan’
fixedbugs/issue25727.go:13:10: error: reference to undefined field or method ‘DoneChan’
fixedbugs/issue25727.go:14:21: error: unknown field ‘tlsConfig’ in ‘http.Server’
fixedbugs/issue25727.go:15:21: error: unknown field ‘DoneChan’ in ‘http.Server’
fixedbugs/issue25727.go:21:14: error: unknown field ‘bAr’ in ‘foo’
Change-Id: I32ce0b7d80017b2367b8fb479a881632240d4161
Reviewed-on: https://go-review.googlesource.com/c/go/+/277455
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
fixedbugs/issue14136.go:17:16: error: unknown field ‘X’ in ‘T’
fixedbugs/issue14136.go:18:13: error: incompatible type in initialization (cannot use type int as type string)
fixedbugs/issue14520.go:9:37: error: import path contains control character
fixedbugs/issue14520.go:14:2: error: expected ‘)’
fixedbugs/issue14520.go:14:3: error: expected declaration
fixedbugs/issue14652.go:9:7: error: use of undefined type ‘any’
fixedbugs/issue14729.go:13:17: error: embedded type may not be a pointer
fixedbugs/issue15514.dir/c.go:10: error: incompatible type in initialization
fixedbugs/issue15898.go:11:9: error: duplicate type in switch
fixedbugs/issue15898.go:16:9: error: duplicate type in switch
fixedbugs/issue16439.go:10:21: error: index expression is negative
fixedbugs/issue16439.go:13:21: error: index expression is negative
fixedbugs/issue16439.go:16:21: error: index expression is not integer constant
fixedbugs/issue16439.go:18:22: error: index expression is not integer constant
fixedbugs/issue17328.go:11:20: error: expected ‘{’
fixedbugs/issue17328.go:11:20: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue17328.go:13:1: error: expected declaration
fixedbugs/issue17588.go:14:15: error: expected type
fixedbugs/issue17631.go:20:17: error: unknown field ‘updates’ in ‘unnamed struct’
fixedbugs/issue17645.go:15:13: error: incompatible type in initialization
fixedbugs/issue17758.go:13:1: error: redefinition of ‘foo’
fixedbugs/issue17758.go:9:1: note: previous definition of ‘foo’ was here
fixedbugs/issue18092.go:13:19: error: expected colon
fixedbugs/issue18231.go:17:12: error: may only omit types within composite literals of slice, array, or map type
fixedbugs/issue18393.go:24:38: error: expected type
fixedbugs/issue18419.dir/test.go:12: error: reference to unexported field or method 'member'
fixedbugs/issue18655.go:14:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:15:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:16:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:17:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:18:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:20:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:21:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18655.go:22:1: error: redefinition of ‘m’
fixedbugs/issue18655.go:13:1: note: previous definition of ‘m’ was here
fixedbugs/issue18915.go:13:20: error: expected ‘;’ after statement in if expression
fixedbugs/issue18915.go:16:21: error: parse error in for statement
fixedbugs/issue18915.go:19:24: error: expected ‘;’ after statement in switch expression
fixedbugs/issue18915.go:13:12: error: ‘a’ declared but not used
fixedbugs/issue18915.go:16:13: error: ‘b’ declared but not used
fixedbugs/issue18915.go:19:16: error: ‘c’ declared but not used
fixedbugs/issue19012.go:16:17: error: return with value in function with no return type
fixedbugs/issue19012.go:18:9: error: return with value in function with no return type
fixedbugs/issue19012.go:22:16: error: argument 2 has incompatible type (cannot use type bool as type uint)
fixedbugs/issue19012.go:22:9: error: too many arguments
fixedbugs/issue19012.go:22:16: error: incompatible types in binary expression
fixedbugs/issue19012.go:24:9: error: too many arguments
fixedbugs/issue19056.go:9:9: error: expected operand
fixedbugs/issue19056.go:9:9: error: expected ‘;’ or newline after top level declaration
fixedbugs/issue19482.go:25:15: error: expected struct field name
fixedbugs/issue19482.go:27:15: error: expected struct field name
fixedbugs/issue19482.go:31:19: error: expected struct field name
fixedbugs/issue19482.go:33:15: error: expected struct field name
fixedbugs/issue19667.go:13:1: error: expected operand
fixedbugs/issue19667.go:13:1: error: missing ‘)’
fixedbugs/issue19667.go:13:105: error: expected ‘;’ after statement in if expression
fixedbugs/issue19667.go:13:105: error: expected ‘{’
fixedbugs/issue19667.go:12:19: error: reference to undefined name ‘http’
Change-Id: Ia9c75b9c78671f354f0a0623dbc075157ef8f181
Reviewed-on: https://go-review.googlesource.com/c/go/+/277433
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Since CL 270057, there're many attempts to fix the expand_calls pass
with interface{}-typed. But all of them did not fix the root cause. The
main issue is during SSA conversion in gc/ssa.go, for empty interface
case, we make its type as n.Type, instead of BytePtr.
To fix these, we can just use BytePtr for now, since when itab fields
are treated as scalar.
No significal changes on compiler speed, size.
cmd/compile/internal/ssa
expandCalls.func6 9488 -> 9232 (-2.70%)
file before after Δ %
cmd/compile/internal/ssa.s 3992893 3992637 -256 -0.006%
total 20500447 20500191 -256 -0.001%
Fixes#43112
Updates #42784
Updates #42727
Updates #42568
Change-Id: I0b15d9434e0be5448453e61f98ef9c2d6cd93792
Reviewed-on: https://go-review.googlesource.com/c/go/+/276952
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
The Go spec requires that select case clauses be evaluated in order,
which is stricter than normal ordering semantics. cmd/compile handled
this correctly for send clauses, but was not correctly handling
receive clauses that involved bare variable references.
Discovered with @cuonglm.
Fixes#43111.
Change-Id: Iec93b6514dd771875b084ba49c15d7f4531b4a6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/277132
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
fixedbugs/bug13343.go:10:12: error: initialization expressions for ‘b’ and ‘c’ depend upon each other
fixedbugs/bug13343.go:11:9: note: ‘c’ defined here
fixedbugs/bug13343.go:11:9: error: initialization expression for ‘c’ depends upon itself
fixedbugs/bug13343.go:11:9: error: initialization expressions for ‘c’ and ‘b’ depend upon each other
fixedbugs/bug13343.go:10:12: note: ‘b’ defined here
fixedbugs/issue10700.dir/test.go:24:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:25:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:27:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:28:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:31:10: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:33:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:34:10: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:35:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:37:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:38:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:40:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:41:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:42:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:43:10: error: reference to method ‘secret’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:44:13: error: reference to unexported field or method ‘secret’
fixedbugs/issue10975.go:13:9: error: interface contains embedded non-interface
fixedbugs/issue11326.go:26:17: error: floating-point constant overflow
fixedbugs/issue11326.go:27:17: error: floating-point constant overflow
fixedbugs/issue11326.go:28:17: error: floating-point constant overflow
fixedbugs/issue11361.go:9:11: error: import file ‘fmt’ not found
fixedbugs/issue11361.go:11:11: error: reference to undefined name ‘fmt’
fixedbugs/issue11371.go:12:15: error: floating-point constant truncated to integer
fixedbugs/issue11371.go:13:15: error: integer constant overflow
fixedbugs/issue11371.go:17:15: error: floating-point constant truncated to integer
fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:9:19: error: integer constant overflow
fixedbugs/issue11590.go:10:24: error: complex real part overflow
fixedbugs/issue11590.go:11:25: error: complex real part overflow
fixedbugs/issue11610.go:11:7: error: import path is empty
fixedbugs/issue11610.go:12:4: error: invalid character 0x3f in input file
fixedbugs/issue11610.go:14:1: error: expected identifier
fixedbugs/issue11610.go:14:1: error: expected type
fixedbugs/issue11614.go:14:9: error: interface contains embedded non-interface
fixedbugs/issue13248.go:13:1: error: expected operand
fixedbugs/issue13248.go:13:1: error: missing ‘)’
fixedbugs/issue13248.go:12:5: error: reference to undefined name ‘foo’
fixedbugs/issue13266.go:10:8: error: package name must be an identifier
fixedbugs/issue13266.go:10:8: error: expected ‘;’ or newline after package clause
fixedbugs/issue13266.go:10:8: error: expected declaration
fixedbugs/issue13273.go:50:18: error: expected ‘chan’
fixedbugs/issue13273.go:53:24: error: expected ‘chan’
fixedbugs/issue13274.go:11:58: error: expected ‘}’
fixedbugs/issue13365.go:14:19: error: index expression is negative
fixedbugs/issue13365.go:15:21: error: index expression is negative
fixedbugs/issue13365.go:16:22: error: index expression is negative
fixedbugs/issue13365.go:19:13: error: some element keys in composite literal are out of range
fixedbugs/issue13365.go:22:19: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:23:21: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:24:22: error: incompatible type for element 1 in composite literal
fixedbugs/issue13415.go:14:5: error: redefinition of ‘x’
fixedbugs/issue13415.go:14:5: note: previous definition of ‘x’ was here
fixedbugs/issue13415.go:14:5: error: ‘x’ declared but not used
fixedbugs/issue13471.go:12:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:13:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:14:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:15:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:16:23: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:18:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:19:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:20:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:21:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:22:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:24:24: error: floating-point constant truncated to integer
fixedbugs/issue13821b.go:18:12: error: incompatible types in binary expression
fixedbugs/issue13821b.go:19:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:20:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:21:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:22:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:24:12: error: incompatible types in binary expression
fixedbugs/issue14006.go:24:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:30:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:37:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:43:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:59:17: note: previous definition of ‘labelname’ was here
fixedbugs/issue14006.go:64:17: error: label ‘labelname’ already defined
fixedbugs/issue14006.go:24:17: error: value computed is not used
fixedbugs/issue14006.go:30:17: error: value computed is not used
fixedbugs/issue14006.go:37:20: error: value computed is not used
fixedbugs/issue14006.go:43:20: error: value computed is not used
fixedbugs/issue14006.go:59:17: error: label ‘labelname’ defined and not used
fixedbugs/issue14010.go:13:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:9: error: invalid use of type
fixedbugs/issue14321.go:30:10: error: method ‘F’ is ambiguous in type ‘C’
fixedbugs/issue14321.go:31:10: error: ‘G’ is ambiguous via ‘A’ and ‘B’
fixedbugs/issue14321.go:33:10: error: type ‘C’ has no method ‘I’
fixedbugs/issue8183.go:12:14: error: integer constant overflow
fixedbugs/issue9036.go:21:12: error: invalid prefix for floating constant
fixedbugs/issue9036.go:22:12: error: invalid prefix for floating constant
fixedbugs/issue9076.go:14:5: error: incompatible type in initialization (cannot use type uintptr as type int32)
fixedbugs/issue9076.go:15:5: error: incompatible type in initialization (cannot use type uintptr as type int32)
For issue9083.go avoid an error about a variable that is set but not used.
fixedbugs/issue9370.go:105:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:106:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:107:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:108:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:109:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:110:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:112:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:113:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:114:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:115:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:116:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:117:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:36:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:39:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:43:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:46:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:50:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:53:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:56:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:57:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:58:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:59:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:60:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:61:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:65:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:68:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:70:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:71:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:72:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:73:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:74:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:75:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:77:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:78:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:79:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:80:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:81:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:82:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:84:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:85:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:86:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:87:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:88:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:89:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:91:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:92:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:93:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:94:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:95:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:96:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:98:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:99:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go💯15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:101:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:102:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:103:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:121:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:122:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:123:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:124:15: error: incompatible types in binary expression
Change-Id: I4089de4919112b08f5f2bbec20f84fcc7dbe3955
Reviewed-on: https://go-review.googlesource.com/c/go/+/276832
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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It just makes the compiler crash. Oops.
Fixes#43099
Change-Id: Id996c14799c1a5d0063ecae3b8770568161c2440
Reviewed-on: https://go-review.googlesource.com/c/go/+/276652
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
The gofrontend code would in some circumstances incorrectly generate a
type descriptor for an alias type, causing the type to fail to be
equal to the unaliased type.
Change-Id: I47d33b0bfde3c72a9a186049539732bdd5a6a96e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275632
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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An address of offset(SP) may point to the callee args area, and
may be used to move things into/out of the args/results. If an
address like that is spilled and picked up by the GC, it may hold
an arg/result live in the callee, which may not actually be live
(e.g. a result not initialized at function entry). Make sure
they are rematerializeable, so they are always short-lived and
never picked up by the GC.
This CL changes 386, PPC64, and Wasm. On AMD64 we already have
the rule (line 2159). On other architectures, we already have
similar rules like
(OffPtr [off] ptr:(SP)) => (MOVDaddr [int32(off)] ptr)
to avoid this problem. (Probably me in the past had run into
this...)
Fixes#42944.
Change-Id: Id2ec73ac08f8df1829a9a7ceb8f749d67fe86d1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275174
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Keith Randall <khr@golang.org>
assign.go:59:28: error: ‘x’ repeated on left side of :=
assign.go:65:20: error: ‘a’ repeated on left side of :=
method2.go:36:11: error: reference to method ‘val’ in type that is pointer to interface, not interface
method2.go:37:11: error: reference to method ‘val’ in type that is pointer to interface, not interface
Change-Id: I8f385c75a82fae4eacf4618df8f9f65932826494
Reviewed-on: https://go-review.googlesource.com/c/go/+/274447
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Than McIntosh <thanm@google.com>
Now that filepath.WalkDir is available, it is more efficient
and should be used in place of filepath.Walk.
Update the tree to reflect best practices.
As usual, the code compiled with Go 1.4 during bootstrap is excluded.
(In this CL, that's only cmd/dist.)
For #42027.
Change-Id: Ib0f7b1e43e50b789052f9835a63ced701d8c411c
Reviewed-on: https://go-review.googlesource.com/c/go/+/267719
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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Reviewed-by: Rob Pike <r@golang.org>
The gofrontend code doesn't distinguish semicolon and newline,
and it doesn't have special treatment for EOF.
syntax/semi6.go:9:47: error: unexpected semicolon or newline in type declaration
syntax/semi6.go:11:62: error: unexpected semicolon or newline in type declaration
Change-Id: I9996b59a4fc78ad1935e779f354ddf75c0fb44e0
Reviewed-on: https://go-review.googlesource.com/c/go/+/274692
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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These replacement rules assume that TST and TEQ set V. But TST and
TEQ do not set V. This is a problem because instructions like LT are
actually checking for N!=V. But with TST and TEQ not setting V, LT
doesn't do anything meaningful. It's possible to construct trivial
miscompilations from this, such as:
package main
var x = [4]int32{-0x7fffffff, 0x7fffffff, 2, 4}
func main() {
if x[0] > x[1] {
panic("fail 1")
}
if x[2]&x[3] < 0 {
panic("fail 2") // Fails here
}
}
That first comparison sets V, via the CMP that subtracts the values
causing the overflow. Then the second comparison operation thinks that
it uses the result of TST, when it actually uses the V from CMP.
Before this fix:
TST R0, R1
BLT loc_6C164
After this fix:
TST R0, R1
BMI loc_6C164
The BMI instruction checks the N flag, which TST sets. This commit
fixes the issue by using [LG][TE]noov instead of vanilla [LG][TE], and
also adds a test case for the direct issue.
Fixes#42876.
Change-Id: I13c62c88d18574247ad002b671b38d2d0b0fc6fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/274026
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
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Trust: Jason A. Donenfeld <Jason@zx2c4.com>
This matches the error messages after CL 273890.
syntax/semi4.go:11:9: error: unexpected semicolon or newline, expecting ‘{’ after for clause
syntax/semi4.go:10:13: error: reference to undefined name ‘x’
syntax/semi4.go:12:17: error: reference to undefined name ‘z’
Change-Id: Ic88ff6e27d50bf70f5b2114383b84c42c0682f39
Reviewed-on: https://go-review.googlesource.com/c/go/+/273891
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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shift1.go:76:16: error: shift of non-integer operand
shift1.go:77:16: error: shift of non-integer operand
Change-Id: I48584c0b01f9f6912a93b5f9bba55b5803fbeced
Reviewed-on: https://go-review.googlesource.com/c/go/+/273888
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
As of https://golang.org/cl/273886:
fixedbugs/bug340.go:15:18: error: reference to method ‘x’ in interface with no methods
For golang/go#10700
Change-Id: Id29eb0e34bbb524117614229c4c27cfd17dae286
Reviewed-on: https://go-review.googlesource.com/c/go/+/273887
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
These changes match the following gofrontend error messages:
blank1.go:16:1: error: may not define methods on non-local type
chan/perm.go:28:9: error: expected channel
chan/perm.go:29:11: error: left operand of ‘<-’ must be channel
chan/perm.go:69:9: error: argument must be channel
complit1.go:25:16: error: attempt to slice object that is not array, slice, or string
complit1.go:26:16: error: attempt to slice object that is not array, slice, or string
complit1.go:27:17: error: attempt to slice object that is not array, slice, or string
complit1.go:49:41: error: may only omit types within composite literals of slice, array, or map type
complit1.go:50:14: error: expected struct, slice, array, or map type for composite literal
convlit.go:24:9: error: invalid type conversion (cannot use type unsafe.Pointer as type string)
convlit.go:25:9: error: invalid type conversion (cannot use type unsafe.Pointer as type float64)
convlit.go:26:9: error: invalid type conversion (cannot use type unsafe.Pointer as type int)
ddd1.go:63:9: error: invalid use of ‘...’ calling non-variadic function
fixedbugs/bug176.go:12:18: error: index expression is not integer constant
fixedbugs/bug332.go:17:10: error: use of undefined type ‘T’
fixedbugs/issue4232.go:22:16: error: integer constant overflow
fixedbugs/issue4232.go:33:16: error: integer constant overflow
fixedbugs/issue4232.go:44:25: error: integer constant overflow
fixedbugs/issue4232.go:55:16: error: integer constant overflow
fixedbugs/issue4458.go:19:14: error: type has no method ‘foo’
fixedbugs/issue5172.go:24:14: error: too many expressions for struct
init.go:17:9: error: reference to undefined name ‘runtime’
initializerr.go:26:29: error: duplicate value for index 1
interface/explicit.go:60:14: error: type assertion only valid for interface types
label.go:64:9: error: reference to undefined label ‘go2’
label1.go:18:97: error: continue statement not within for
label1.go:22:97: error: continue statement not within for
label1.go:106:89: error: continue statement not within for
label1.go:108:26: error: invalid continue label ‘on’
label1.go:111:118: error: break statement not within for or switch or select
label1.go:113:23: error: invalid break label ‘dance’
map1.go:64:9: error: not enough arguments
map1.go:65:9: error: not enough arguments
map1.go:67:9: error: argument 1 must be a map
method2.go:36:11: error: reference to undefined field or method ‘val’
method2.go:37:11: error: reference to undefined field or method ‘val’
method2.go:41:12: error: method requires pointer (use ‘(*T).g’)
syntax/chan1.go:13:19: error: send statement used as value; use select for non-blocking send
syntax/chan1.go:17:11: error: send statement used as value; use select for non-blocking send
Change-Id: I98047b60a376e3d2788836300f7fcac3f2c285cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/273527
Trust: Ian Lance Taylor <iant@golang.org>
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CL 271906 allows loading single field of typed-interface{} OpIData, but
it does not update the corresponding selector type. So the generated
OpLoad has the named type instead, prevent it from being lowered by
lower pass.
Fixes#42784
Change-Id: Idf32e4f711731be09d508dd712b60bc8c58309bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/272466
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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The bug was introduced by https://golang.org/cl/220844.
Fixes#42790.
Change-Id: I44d619a1a4d3f2aee1c5575d5cfddcc4ba10895f
Reviewed-on: https://go-review.googlesource.com/c/go/+/272666
Trust: Robert Griesemer <gri@golang.org>
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This issue was already fixed at tip. Just adding the test that
failed on 1.14/1.15.
Update #42753
Change-Id: I00d13ade476b9c17190d762d7fdcb30cf6c83954
Reviewed-on: https://go-review.googlesource.com/c/go/+/272029
Trust: Keith Randall <khr@golang.org>
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Reviewed-by: David Chase <drchase@google.com>
Same reason as CL 270057, but for OpLoad.
Fixes#42727
Change-Id: Iebb1a8110f29427a0aed3b5e3e84f0540de3d1b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/271906
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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When inlining a function call expression, it's possible that the
function callee subexpression has side effects that need to be
preserved. This used to not be an issue, because inlining wouldn't
recognize these as inlinable anyway. But golang.org/cl/266199 extended
the inlining logic to recognize more cases, but did not notice that
the actual inlining code was discarding side effects.
Issue identified by danscales@.
Fixes#42703.
Change-Id: I95f8fc076b6ca4e9362e80ec26dad9d87a5bc44a
Reviewed-on: https://go-review.googlesource.com/c/go/+/271219
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
Trust: Matthew Dempsky <mdempsky@google.com>
Within the frontend, we generally don't guarantee uniqueness of
anonymous types. For example, each struct type literal gets
represented by its own types.Type instance.
However, the field tracking code was using the struct type as a map
key. This broke in golang.org/cl/256457, because that CL started
changing the inlined parameter variables from using the types.Type of
the declared parameter to that of the call site argument. These are
always identical types (e.g., types.Identical would report true), but
they can be different pointer values, causing the map lookup to fail.
The easiest fix is to simply get rid of the map and instead use
Node.Opt for tracking the types.Field. To mitigate against more latent
field tracking failures (e.g., if any other code were to start trying
to use Opt on ODOT/ODOTPTR fields), we store this field
unconditionally. I also expect having the types.Field will be useful
to other frontend code in the future.
Finally, to make it easier to test field tracking without having to
run make.bash with GOEXPERIMENT=fieldtrack, this commit adds a
-d=fieldtrack flag as an alternative way to enable field tracking
within the compiler. See also #42681.
Fixes#42686.
Change-Id: I6923d206d5e2cab1e6798cba36cae96c1eeaea55
Reviewed-on: https://go-review.googlesource.com/c/go/+/271217
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Some rules for PPC64 were checking for a case
where a shift followed by an 'and' of a mask could
be lowered, depending on the format of the mask. The
function to verify if the mask was valid for this purpose
was not checking if the mask was 0 which we don't want to
allow. This case can happen if previous optimizations
resulted in that mask value.
This fixes isPPC64ValidShiftMask to check for a mask of 0 and return
false.
This also adds a codegen testcase to verify it doesn't try to
match the rules in the future.
Fixes#42610
Change-Id: I565d94e88495f51321ab365d6388c01e791b4dbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/270358
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
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Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
mips SRA/SLL/SRL shift amounts are used mod 32; this change aligns the
XXXconst rules to mask the shift amount by &31.
Passes
$ GOARCH=mips go build -toolexec 'toolstash -cmp' -a std
$ GOARCH=mipsle go build -toolexec 'toolstash -cmp' -a std
Fixes#42587
Change-Id: I6003ebd0bc500fba4cf6fb10254e1b557bf8c48f
Reviewed-on: https://go-review.googlesource.com/c/go/+/270117
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
In certain cases, the declkared type of an OpIData is interface{}.
This was not expected (since interface{} is a pair, right?) and
thus caused a crash. What is intended is that these be treated as
a byteptr, so do that instead (this is what happens in 1.15).
Fixes#42568.
Change-Id: Id7c9e5dc2cbb5d7c71c6748832491ea62b0b339f
Reviewed-on: https://go-review.googlesource.com/c/go/+/270057
Trust: David Chase <drchase@google.com>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
When a variable symbol is both imported (possibly through
inlining) and linkname'd, make sure its LSym is marked as
non-package for symbol indexing in the object file, so it is
resolved by name and dedup'd with the original definition.
Fixes#42401.
Change-Id: I8e90c0418c6f46a048945c5fdc06c022b77ed68d
Reviewed-on: https://go-review.googlesource.com/c/go/+/268178
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Fixes#42445
Change-Id: I9653ef094dba2a1ac2e3daaa98279d10df17a2a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/268257
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
Trust: Martin Möhrmann <moehrmann@google.com>
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CL 244579 added guard clauses to prevent a faulty state that was
possible under the incorrect logic of the uniquePred loop in
addLocalInductiveFacts. That faulty state was still making the
intended optimization, but not for the correct reason.
Removing the faulty state also removed the overly permissive application
of the optimization, and therefore made these two tests fail.
We disabled the tests of this optimization in CL 244579 to allow us to
quickly apply the fix in the CL. This CL now corrects the logic of the
uniquePred loop in order to apply the optimization correctly.
The comment above the uniquePred loop says that it will follow unique
predecessors until it reaches a join point. Without updating the child
node on each iteration, it cannot follow the chain of unique
predecessors more than one step. Adding the update to the child node
on each iteration of the loop allows the logic to follow the chain of
unique predecessors until reaching a join point (because a non-unique
predecessor will signify a join point).
Updates #40502.
Change-Id: I23d8367046a2ab3ce4be969631f9ba15dc533e6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/246157
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This CL adds support for inlining type switches, including exporting
and importing them.
Type switches are represented mostly the same as expression switches.
However, if the type switch guard includes a short variable
declaration, then there are two differences: (1) there's an ONONAME
(in the OTYPESW's Left) to represent the overall pseudo declaration;
and (2) there's an ONAME (in each OCASE's Rlist) to represent the
per-case variables.
For simplicity, this CL simply writes out each variable separately
using iimport/iiexport's normal Vargen mechanism for disambiguating
identically named variables within a function. This could be improved
somewhat, but inlinable type switches are probably too uncommon to
merit the complexity.
While here, remove "case OCASE" from typecheck1. We only type check
"case" clauses as part of a "select" or "switch" statement, never as
standalone statements.
Fixes#37837
Change-Id: I8f42f6c9afdd821d6202af4a6bf1dbcbba0ef424
Reviewed-on: https://go-review.googlesource.com/c/go/+/266203
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Optimize combinations of left and right shifts by a constant value
into a 'rotate then insert selected bits [into zero]' instruction.
Use the same instruction for contiguous masks since it has some
benefits over 'and immediate' (not restricted to 32-bits, does not
overwrite source register).
To keep the complexity of this change under control I've only
implemented 64 bit operations for now.
There are a lot more optimizations that can be done with this
instruction family. However, since their function overlaps with other
instructions we need to be somewhat careful not to break existing
optimization rules by creating optimization dead ends. This is
particularly true of the load/store merging rules which contain lots
of zero extensions and shifts.
This CL does interfere with the store merging rules when an operand
is shifted left before it is stored:
binary.BigEndian.PutUint64(b, x << 1)
This is unfortunate but it's not critical and somewhat complex so
I plan to fix that in a follow up CL.
file before after Δ %
addr2line 4117446 4117282 -164 -0.004%
api 4945184 4942752 -2432 -0.049%
asm 4998079 4991891 -6188 -0.124%
buildid 2685158 2684074 -1084 -0.040%
cgo 4553732 4553394 -338 -0.007%
compile 19294446 19245070 -49376 -0.256%
cover 4897105 4891319 -5786 -0.118%
dist 3544389 3542785 -1604 -0.045%
doc 3926795 3927617 +822 +0.021%
fix 3302958 3293868 -9090 -0.275%
link 6546274 6543456 -2818 -0.043%
nm 4102021 4100825 -1196 -0.029%
objdump 4542431 4548483 +6052 +0.133%
pack 2482465 2416389 -66076 -2.662%
pprof 13366541 13363915 -2626 -0.020%
test2json 2829007 2761515 -67492 -2.386%
trace 10216164 10219684 +3520 +0.034%
vet 6773956 6773572 -384 -0.006%
total 107124151 106917891 -206260 -0.193%
Change-Id: I7591cce41e06867ba10a745daae9333513062746
Reviewed-on: https://go-review.googlesource.com/c/go/+/233317
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