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79 Commits

Author SHA1 Message Date
Russ Cox
f20c2e1cf5 gc: more crash avoidance 
Fixes #961.
Fixes #962.

R=ken2
CC=golang-dev
https://golang.org/cl/1903043
 2010-07-26 17:34:17 -07:00
Russ Cox
d5a80d0ba4 gc: no more ... 
various cleanup, deleting unused code

R=ken2
CC=golang-dev
https://golang.org/cl/1663041
 2010-06-14 11:24:51 -07:00
Russ Cox
565b5dc076 gc: new typechecking rules 
* Code for assignment, conversions now mirrors spec.
* Changed some snprint -> smprint.
* Renamed runtime functions to separate
  interface conversions from type assertions:
  convT2I, assertI2T, etc.
* Correct checking of \U sequences.

Fixes #840.
Fixes #830.
Fixes #778.

R=ken2
CC=golang-dev
https://golang.org/cl/1303042
 2010-06-08 18:50:02 -07:00
Ken Thompson
2edb02b41e 1. decommit complex(float) conversion 
2. add complex algorithm for map/chan
3. test for use of complex in
   array, slice, field, chan, map,
   field, pointer.

R=rsc
CC=golang-dev
https://golang.org/cl/384041
 2010-03-09 17:51:30 -08:00
Russ Cox
4ac011a011 gc: simplify complex typecheck 
do not convert to float prematurely.

R=ken2
CC=golang-dev
https://golang.org/cl/311041
 2010-03-08 15:44:18 -08:00
Russ Cox
ed13d39972 gc: minor const simplifications 
R=ken2
CC=golang-dev
https://golang.org/cl/217069
 2010-02-21 11:18:09 -08:00
Ken Thompson
f59cb49a5a fixed bug in mpconst float multiply by 0. 
more complex -- constants, variables and print.

R=rsc
CC=golang-dev
https://golang.org/cl/217061
 2010-02-19 20:42:50 -08:00
Ken Thompson
fc010adcd7 complex constant multiply and divide 
R=rsc
CC=golang-dev
https://golang.org/cl/217041
 2010-02-18 17:55:11 -08:00
Ken Thompson
713e3e1541 more complex - constants 
import and export

R=rsc
CC=golang-dev
https://golang.org/cl/214050
 2010-02-18 14:46:28 -08:00
Ken Thompson
33d6a260c1 new types complex, complex64 and complex128 
only front-end compiler work.
best to do thin in 3 steps
1. frontend
2. backend
3. lib

R=rsc
CC=golang-dev
https://golang.org/cl/214042
 2010-02-17 22:08:30 -08:00
Russ Cox
5ab8f00bf8 gc: diagnose invalid array bounds 
Fixes #587.

R=ken2
CC=golang-dev
https://golang.org/cl/207085
 2010-02-12 13:59:02 -08:00
Russ Cox
674458e1c4 gc: bug246 
R=ken2
CC=golang-dev
https://golang.org/cl/198057
 2010-02-01 23:05:15 -08:00
Russ Cox
d1b14a6fb0 gc: bug247, reported by rob 
R=ken2
CC=golang-dev
https://golang.org/cl/194051
 2010-01-24 22:42:18 -08:00
Russ Cox
307a899d5b gc: bug238 
Fixes #471.

R=ken2
CC=golang-dev
https://golang.org/cl/181184
 2010-01-08 00:01:03 -08:00
Russ Cox
aa4c638b7b x[y:] for strings 
R=ken2
https://golang.org/cl/157114
 2009-11-20 11:42:28 -08:00
Russ Cox
1ee83f851d gc: change "can we const evaluate this" from blacklist to whitelist 
R=ken2
https://golang.org/cl/155074
 2009-11-16 17:40:47 -08:00
Russ Cox
a338231526 gc: five bug fixes, one better error. 
* check for struct literal assignment to private fields.
* record, fix crash involving parallel map assignment.
* avoid infinite recursion in exportassignok.
* make floating point bounds check precise.
* avoid crash on invalid receiver.

* add context to error about implicit assignment.

Fixes #86.
Fixes #88.
Fixes #158.
Fixes #174.
Fixes #201.
Fixes #204.

R=ken2
https://golang.org/cl/154144
 2009-11-15 12:57:09 -08:00
Russ Cox
4b13d1b9b5 gc: do not try to constant-evaluate (interface{})("bar") 
Fixes #183.

R=ken
https://golang.org/cl/154139
 2009-11-14 14:14:27 -08:00
Russ Cox
60ff8cc86f address bug193 and add note to spec about it. 
R=ken
OCL=35920
CL=35920
 2009-10-20 08:27:14 -07:00
Russ Cox
a95ee61aea ideal bools and related fixes 
R=ken
OCL=34859
CL=34865
 2009-09-21 15:45:55 -07:00
Russ Cox
83bdb805a2 error message fixes 
x == nil
x.go:5: cannot use nil as bool

c := x.(type);
x.go:88: use of .(type) outside type switch

R=ken
OCL=34476
CL=34476
 2009-09-09 01:21:20 -07:00
Russ Cox
e780fa8669 defining package block names must override 
universe block names.

BUG=2097244
R=ken
OCL=34295
CL=34473
 2009-09-09 01:01:39 -07:00
Russ Cox
3443656bce clean up ideal handling; reject attempts 
to write type descriptors for ideal types

R=ken
OCL=33958
CL=33958
 2009-08-27 11:16:34 -07:00
Russ Cox
14be733a25 bug197 
R=ken
OCL=33765
CL=33765
 2009-08-24 13:41:47 -07:00
Russ Cox
ac9d833c1e half of bug193 
R=ken
OCL=33730
CL=33730
 2009-08-23 18:09:44 -07:00
Russ Cox
e1c5d179d6 fix crash in bug194; add bug196 
R=ken
OCL=33694
CL=33697
 2009-08-21 17:54:07 -07:00
Russ Cox
b648716ee9 forward declarations not necessary. 
still to do:
	* initializer cycle detection
	* nicer error for type checking cycles

R=ken
OCL=32855
CL=32880
 2009-08-07 12:50:26 -07:00
Russ Cox
d8c19c80dc type checking of assignments, switch, if, for 
R=ken
OCL=32716
CL=32720
 2009-08-04 10:26:29 -07:00
Russ Cox
9dc22b6d6f more 6g reorg; checkpoint. 
typecheck.c is now responsible for all type checking
except for assignment and function argument "..."

R=ken
OCL=32661
CL=32667
 2009-08-03 11:58:52 -07:00
Russ Cox
ff3a73b407 typechecking checkpoint. 
started to move typechecking to another file.
can build entire tree still, but lots of work
is duplicated.  much to clean up.

R=ken
OCL=32536
CL=32543
 2009-07-30 16:53:08 -07:00
Russ Cox
9271c6402e introduce typecheck pass before walkexpr. 
not complete but compiler still works.

R=ken
OCL=32424
CL=32426
 2009-07-29 12:47:51 -07:00
Russ Cox
b7dd312c93 bug170; fix test for bug175 
R=ken
OCL=32255
CL=32255
 2009-07-27 17:24:07 -07:00
Russ Cox
059bbdd340 print(1<<x) 
R=ken
OCL=32252
CL=32252
 2009-07-27 16:17:09 -07:00
Russ Cox
db508ccbff baby step: const decls can refer to future 
consts in the same factored block

	const (
		X = Y;
		Y = 2;
	)

R=ken
OCL=31782
CL=31782
 2009-07-17 13:38:16 -07:00
Russ Cox
0aa1b1508a shift typechecking bugs 
x << "a"
	1 << int(2)

R=ken
OCL=31244
CL=31244
 2009-07-06 23:33:17 -07:00
Russ Cox
a14b28a24d fix bug involving typed nil constants: 
interface = (*int)(nil) is not the same as
interface = nil.

package main
func main() {
	var x interface{} = (*int)(nil);
	println(x.(*int));
}

R=ken
OCL=31232
CL=31232
 2009-07-06 21:37:29 -07:00
Russ Cox
70a273476b better error; clean up lineno in a few places 
wreck.mtv=; cat x.go
package main
var x = string.Split()
wreck.mtv=; 6g x.go
x.go:2: type string used as expression
x.go:2: undefined DOT Split on string
x.go:3: illegal types for operand: AS
	undefined
wreck.mtv=;

BUG=1938751
R=ken
OCL=30766
CL=30766
 2009-06-25 16:32:33 -07:00
Ken Thompson
fbcbcdbb1d bug 156 
R=r
OCL=29623
CL=29623
 2009-05-29 15:34:47 -07:00
Ken Thompson
3b37b02834 bug 149 
R=r
OCL=29612
CL=29612
 2009-05-29 13:44:30 -07:00
Russ Cox
3aa006b8cd better 64-bit handling in 8g. 
fewer moves, fewer stupid LEALs.
powser1 runs (with evaln commented out).
beginnings of floating point.

R=ken
OCL=29540
CL=29543
 2009-05-28 15:48:47 -07:00
Russ Cox
e81d97ea84 clean up gmove: 
* conversions all in one place.
	* no separate load, store phases;
	  direct memory addressing when possible
	  (this is the x86 after all!).
	  avoids extra registers, extra MOVQs.
	* fixes int32 -> uint64 bug
	  (was zero-extending)

R=ken
OCL=29482
CL=29484
 2009-05-27 23:55:14 -07:00
Russ Cox
18890eebbf fix bug154; tweak bug153 exit status 
R=ken
OCL=29448
CL=29448
 2009-05-27 10:16:13 -07:00
Ken Thompson
a016081f43 added key:val extension to 
structure and array literals

R=r
OCL=29190
CL=29190
 2009-05-21 13:46:07 -07:00
Russ Cox
b3533dfd72 6g: 
new type equality restrictions
	better handling of renamed packages
	"sys" is no longer available to programs

R=ken
OCL=28553
CL=28578
 2009-05-08 15:40:31 -07:00
Russ Cox
d4fa253837 eqtype(t1, t2, 0) => eqtype(t1, t2) 
R=ken
OCL=28559
CL=28562
 2009-05-08 14:40:38 -07:00
Russ Cox
b5e212ffdd 6g: error messages 
replace "shape error across CALL" with more information.

x.go:7: not enough arguments to CALL
	a int, b int
	int
x.go:10: assignment count mismatch: 3 = 2
x.go:12: too many arguments to RETURN
	[no arguments expected]
	int, int, int

also leave type alone after conversion failure,
for later errors:

bug049.go:6: cannot convert nil constant to string
bug049.go:6: illegal types for operand: EQ
	string
	nil		# this used to be blank

R=ken
OCL=28405
CL=28407
 2009-05-07 10:29:35 -07:00
Ken Thompson
3657061550 change representation of strings 
R=r
OCL=27293
CL=27293
 2009-04-09 18:16:21 -07:00
Ken Thompson
b8be809c10 ^ type(const) now inverts "enough" bits 
^ signed(const) becomes illegal
^ unsigned(const) becomes legal

R=r
OCL=26697
CL=26697
 2009-03-24 16:40:38 -07:00
Russ Cox
8f194bf5ff make 6g constants behave as ken proposes. (i hope.) 
various bug fixes and tests involving constants.

test/const1.go is the major new test case.

R=ken
OCL=26216
CL=26224
 2009-03-12 19:04:38 -07:00
Ken Thompson
bb02e481d2 added bitclear operators &^ and &^= 
R=r
OCL=26152
CL=26152
 2009-03-11 19:59:35 -07:00