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Commit Graph

54 Commits

Author SHA1 Message Date
Rob Pike
3caa6cfbd2 cmd/vet: add -tags flag
This is needed to control which files to test in the usual manner.
A followup CL on the main repo will add the flag to the go vet command.

Updates golang/go#10228

Change-Id: I820d3c74657b58de5e92276627368dedf4e2096c
Reviewed-on: https://go-review.googlesource.com/10692
Reviewed-by: Andrew Gerrand <adg@golang.org>
2015-06-04 19:20:34 +00:00
Alan Donovan
4a08fb6fc3 cmd/vet: -unusedresult: report calls of pure functions in expression statements
Change-Id: Ib8b6eaecd56ae15c44fb8ac11c781244964428f1
Reviewed-on: https://go-review.googlesource.com/6661
Reviewed-by: David Symonds <dsymonds@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
2015-04-06 21:44:23 +00:00
Nigel Tao
9622599500 cmd/vet: allow spaces in struct tag values.
The validateStructTag code now closely mimics the StructTag.Get code in
package reflect.

This addresses the comment raised on issue #9500:
https://github.com/golang/go/issues/9500#issuecomment-70218780

See also https://go-review.googlesource.com/3953

Change-Id: I583f7447dbc5a2d7ecbb393d9bb6b1515cb10b18
Reviewed-on: https://go-review.googlesource.com/3952
Reviewed-by: Rob Pike <r@golang.org>
2015-02-06 02:26:15 +00:00
Joël Stemmer
913f41fc5f cmd/vet: warn about zero arg index in print format
Argument indexes in a format string are one-based, however vet would not
warn when using a zero-index unless the type of the argument referenced
was not a string. That warning was misleading as it would say the type
was not a string. Vet will now print a correct warning when using a zero
index.

Included are tests for both cases.

Fixes #9752

Change-Id: I285e99990a86a653b4668b0c279d5f5f1c34f7aa
Reviewed-on: https://go-review.googlesource.com/3692
Reviewed-by: Rob Pike <r@golang.org>
2015-02-04 18:31:58 +00:00
Rob Pike
682ca03389 vet: improve validation of struct tags
Actually parse the strings to check them more accurately.
The particular problem it missed was that it didn't check
for control characters in the key. The only valid separator
is a space.

More tests.

Fixes #9500

Change-Id: Ib547e11c7e8d47d81eb8b1e8f1ab9c26174933df
Reviewed-on: https://go-review.googlesource.com/2685
Reviewed-by: Russ Cox <rsc@golang.org>
2015-01-12 23:15:16 +00:00
Austin Clements
348181cdd4 cmd/vet: tests for RET checking, SP checking, and leaf functions
Add tests for recently introduced asm error checks in vet.
This adds tests for the new warnings about functions that
don't store to their return slot before returning or that
store to SP-relative addresses in or beyond the argument
frame.  It also adds a test for leaf function handling on arm,
where the link register is not implicitly saved.

LGTM=rsc
R=rsc
CC=adg, golang-codereviews, r
https://golang.org/cl/166040044
2014-11-03 17:27:41 -05:00
Austin Clements
52f3c4bf8a cmd/vet: update test patterns to include asm function name
vet now includes function names in its error messages about
assembly code.  Update the error test patterns to account for
this and expand some patterns to check that go vet discovers
the function name correctly.

Fixes golang/go#9041

LGTM=r
R=adg, r, rsc
CC=golang-codereviews
https://golang.org/cl/170940044
2014-11-02 12:21:04 -05:00
Josh Bleecher Snyder
e62e5f9885 go.tools/cmd/vet: remove duplicate test file
In CL 145360043, I hg cp'd copylock.go to copylock_func.go instead of hg mv. Oops.

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/143660043
2014-09-26 15:09:18 -07:00
Josh Bleecher Snyder
2cd071c190 go.tools/cmd/vet: warn about copying locks in range statements
Fixes golang/go#8356.

LGTM=r
R=r, dsymonds
CC=golang-codereviews
https://golang.org/cl/145360043
2014-09-24 12:35:15 -07:00
Matt Jibson
59c8647562 go.tools/cmd/vet: detect suspicious shifts
LGTM=josharian, dsymonds, r
R=golang-codereviews, josharian, minux, dsymonds, dave, axwalk, adg, r
CC=golang-codereviews
https://golang.org/cl/134780043
2014-08-29 11:17:01 -07:00
Rob Pike
cd9959d796 go.tools/cmd/vet: validate calls to t.Log and t.Logf
Be careful not to complain about math.Log and cmplx.Log.
Seems worthwhile since t.Log and t.Logf are often written but
rarely executed.

Nothing new turned up in the standard library.

Fixes golang/go#8504.

LGTM=josharian, dsymonds
R=golang-codereviews, josharian, dsymonds
CC=golang-codereviews
https://golang.org/cl/130490043
2014-08-25 12:31:49 -07:00
Rob Pike
671b9204b8 go.tools/cmd/vet: change message for range check
s/enclosed by function/captured by func literal/
Users complained. They often do.

LGTM=josharian, adg
R=golang-codereviews, josharian, nightlyone, minux, adg
CC=golang-codereviews
https://golang.org/cl/132080043
2014-08-24 17:26:18 -07:00
Josh Bleecher Snyder
7da5f193b7 go.tools/cmd/vet: detect stupid boolean conditions
This CL introduces two vet checks. Statistics and code below are from a recent 50mb corpus of public code.

1. Check for redundant conjunctions and disjunctions. This check caught 26 instances, of which 20 were clearly copy/paste bugs and 6 appeared to be mere duplication. A typical example:

if xResolution < 0 || xResolution < 0 {
        panic("SetSize(): width < 0 || height < 0")
}

2. Check for expressions of the form 'x != c1 || x != c2' or 'x == c1 && x == c2', with c1 and c2 constant expressions. This check caught 16 instances, of which all were bugs. A typical example:

if rf.uri.Scheme != "http" || rf.uri.Scheme != "ftp" {
        rf.uri.Scheme = "file"
}

Fixes golang/go#7622.

LGTM=rsc, r
R=golang-codereviews, jscrockett01, r, gri, rsc
CC=golang-codereviews
https://golang.org/cl/98120043
2014-07-02 10:39:57 -07:00
Josh Bleecher Snyder
95a7aeb192 go.tools/cmd/vet: don't panic on commented-out asm
Really two fixes: Don't panic on bad instructions and don't complain about commented out instructions.

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/110070044
2014-06-20 16:52:48 -07:00
Josh Bleecher Snyder
9d6cc5fd08 go.tools/cmd/vet: prevent panic on goto without label
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/107260043
2014-06-20 11:08:45 -07:00
Josh Bleecher Snyder
d46b792624 cmd/vet: check for use of json/xml struct tags with unexported fields
This is a common source of bugs, particularly for those new to Go. Running this on a corpus of public code flagged 114 instances.

This check may need to be updated once issue 7363 is resolved.

LGTM=r
R=golang-codereviews, r
CC=bradfitz, golang-codereviews
https://golang.org/cl/91010047
2014-06-13 18:44:31 -07:00
Russ Cox
b752e9ffdf cmd/vet: diagnose use of unsafe.Pointer to convert integer to pointer
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/100470044
2014-05-15 15:32:51 -04:00
Robert Obryk
91b1b28499 go.tools/cmd/vet: fix a panic on invalid AddInt
Ignore calls to various flavours of atomic.AddInt with a wrong
number of arguments.

LGTM=r
R=golang-codereviews, r
CC=golang-codereviews
https://golang.org/cl/91370045
2014-05-14 12:16:58 -07:00
David Symonds
7c69950f7f vet: Don't consider %T for recursive stringers.
Unlike the other anyType verbs, %T never calls String.

Fixes golang/go#7540.

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/75580045
2014-03-14 16:08:04 +11:00
David Symonds
d4c8d5dae3 vet: Broaden suppression of recursive stringer warning.
Updates golang/go#6212.

LGTM=r, gri
R=r, gri
CC=golang-codereviews
https://golang.org/cl/75130043
2014-03-13 11:19:34 +11:00
Rob Pike
e239f1b3f2 go.tools/cmd/vet: don't check for shadowing of blank identifier
It's pointless.
Also this fixes a crash, because the blank identifier no longer appears as a
defined object after CL 74190043 so we were getting nil pointer violations.
Even better, we get to re-enable a disabled test.

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/75140043
2014-03-13 10:27:55 +11:00
Robert Griesemer
ea79d922e6 go.tools/go/vet: temporarily disable some tests to fix build
Revert this CL once a proper fix is in place.

LGTM=adonovan
R=r, adonovan
CC=golang-codereviews
https://golang.org/cl/74930043
2014-03-12 11:56:25 -07:00
Rob Pike
31c219bef7 go.tools/cmd/vet: change reporting of incorrect error count in Printf
The old code was misleading in saying how many args were present.
Change the wording of the message to be unambiguous and change
the presentation of the format to include the full directive, making
it easier to correlate with the input (and fixing a silent bug).
Fixes golang/go#6248.

LGTM=dsymonds
R=golang-codereviews, dsymonds
CC=golang-codereviews
https://golang.org/cl/69120044
2014-03-04 15:41:49 +11:00
Rob Pike
ee3eeefaa3 cmd/vet: check for nil result set in isStringer
Fixes golang/go#7149.

LGTM=gri
R=golang-codereviews, gri
CC=golang-codereviews
https://golang.org/cl/68260044
2014-02-24 11:39:42 -08:00
Rob Pike
bae6bf6180 go.tools/cmd/vet: improve error message for build tag problems
Fixes golang/go#6979.

R=golang-dev, dave, iant
CC=golang-dev
https://golang.org/cl/37720048
2013-12-18 16:06:56 -08:00
Josh Bleecher Snyder
866b24e166 cmd/vet: check for sync types being copied during function calls
Using a type containing a sync type directly
in a function call (whether as a receiver,
a param, or a return value) is an easy way
to accidentally copy a lock or other sync primitive.
Check for it.

The test as implemented does not provide 100%
coverage; see the discussion near the bottom of
testdata/copylock.go for shortcomings.

Fixes golang/go#6729.

R=adg, r, dsymonds
CC=golang-dev
https://golang.org/cl/23420043
2013-12-09 20:14:28 -08:00
Rob Pike
2afbb1cd5f go.tools/cmd/vet: handle symbolic TEXT annotations
The symbolic names such as NOSPLIT for annotations on the TEXT
directive appeared after vet started checking .s files. This CL tweaks
the regular expression to allow CAPITALS and the symbols | and +
as well as digits in that field, and interprets NOSPLIT as equivalent
to 7 in that field. All magic.

Fixes golang/go#6695

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/18700044
2013-11-01 11:49:11 -07:00
Robert Griesemer
f50f6c858a go.tools/go/types: nil is not a constant + misc. cleanups
- removed support for nil constants from go/exact
- instead define a singleton Nil Object (the nil _value_)
- in assignments, follow more closely spec wording
  (pending spec CL 14415043)
- removed use of goto in checker.unary
- cleanup around handling of isRepresentable for
  constants, with better error messages
- fix missing checks in checker.convertUntyped
- added isTyped (== !isUntyped) and isInterface predicates
- fixed hasNil predicate: unsafe.Pointer also has nil
- adjusted ssa per adonovan
- implememted types.Implements (wrapper arounfd types.MissingMethod)
- use types.Implements in vet (and fix a bug)

R=adonovan, r
CC=golang-dev
https://golang.org/cl/14438052
2013-10-09 14:17:25 -07:00
Rob Pike
6ad0d283e1 go.tools/cmd/vet: handle recursive structs and slices.
Fixes golang/go#6309

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13386046
2013-09-18 12:57:59 +10:00
Rob Pike
ece05f910e go.tools/cmd/vet: update for fmt handling %b for complex numbers
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/13490048
2013-09-16 08:18:27 +10:00
Rob Pike
bc5f637240 go.tools/cmd/vet: assume implementations of fmt.Formatter print just fine
Update golang/go#6212
See issue 6259.
When that is resolved, we can do a better job. Until then, we just see if the
type has a method called Format and, if so, assume it's a Formatter and so
there's nothing to check.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13267043
2013-08-28 11:24:43 +10:00
Andrew Gerrand
890e4c0731 go.tools/cmd/vet: exclude "%#v" from recursive stringer check
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/13163043
2013-08-22 11:44:39 +10:00
Andrew Gerrand
f6a22edf66 go.tools/cmd/vet: relax recursive stringer check
For the pointer receiver x, fmt.Sprintf(*x) does not invoke x's String
method.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12971045
2013-08-22 11:29:44 +10:00
Andrew Gerrand
de72360261 go.tools/cmd/vet: fix build of testdata package
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13144043
2013-08-21 11:08:25 +10:00
Andrew Gerrand
61d86e98d5 go.tools/cmd/vet: check for recursive stringers
Fixes golang/go#6129.

R=r
CC=golang-dev
https://golang.org/cl/12936046
2013-08-21 11:07:53 +10:00
Andrew Gerrand
74ecc2c09b go.tools/cmd/vet: detect useless function comparisons
Also fix bug in types.go discovered by this check.

Fixes golang/go#5347.

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/13102043
2013-08-20 16:11:01 +10:00
David Symonds
a7c698b070 undo CL 12811043 / 44387735a77d
Not the right thing to do.
Fixes golang/go#6148.

««« original CL description
cmd/vet: flag redundant invocations of String and Error methods in printf calls.

R=r
CC=golang-dev
https://golang.org/cl/12811043
»»»

R=r
CC=golang-dev
https://golang.org/cl/13034043
2013-08-19 11:12:44 +10:00
David Symonds
c0b6badc83 cmd/vet: flag redundant invocations of String and Error methods in printf calls.
R=r
CC=golang-dev
https://golang.org/cl/12811043
2013-08-13 13:47:58 +10:00
Robert Griesemer
45e3d57f32 go.tools/cmd/vet: enable test (fix build)
R=r
TBR=r
CC=golang-dev
https://golang.org/cl/12482043
2013-08-05 14:02:52 -07:00
Rob Pike
c333e7a7b6 go.tools/cmd/vet: fix go.tools build
TBR: gri

I cannot create an issue on the tracker for some reason, so here it is:
go vet contains this snippet:

        if types.IsAssignableTo(typ, errorType) || types.IsAssignableTo(typ, stringerType) {

It's getting the wrong answer: It claims

interface {
        f()
}

or even

interface {
        f() float64
}

matches the Error and Stringer interfaces. Both of them.  This causes a test failure:
$ go test code.google.com/p/go.tools/cmd/vet
BUG: errchk: testdata/print.go:124: missing expected error: '"for printf verb %s of wrong type"'
$
This worked until very recently.

R=gri
CC=golang-dev
https://golang.org/cl/12398043
2013-08-03 15:56:56 +10:00
Rob Pike
aecec2f502 go.tools/cmd/vet: the composite test is about keys, not tags
Fix the confusion.
No semantic change, just some renamings.

Fixes golang/go#6017.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/12394043
2013-08-03 12:19:59 +10:00
Rob Pike
797431e1a3 go.tools/cmd/vet: fix printf analysis for structs.
The old code only got it right for Stringers (etc.) and a few other simple cases.
But the rule used by fmt.Printf for non-Stringers is that pointers to structs
print as pointers, the rest must satisfy the format verb element-wise.
Thus for example
        struct {a int, b []byte}
prints with %d and %q (sic) but not %g.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/12340043
2013-08-02 22:52:38 +10:00
Rob Pike
2a8b9debdd go.tools/cmd/vet: don't complain about empty interface values in printf
R=dsymonds
CC=golang-dev
https://golang.org/cl/12005047
2013-07-30 15:51:35 +10:00
Rob Pike
5ba51116ee go.tools/cmd/vet: treat arrays like slices in the printf checks.
The analysis for types.Array was just missing. It's the same as a slice,
but we can't share code easily because the types differ, so we just dup it.

R=dsymonds
CC=golang-dev
https://golang.org/cl/12041045
2013-07-30 14:00:52 +10:00
David Symonds
573374c476 cmd/vet: Fix handling of non-Stringer arguments.
First, %v and %T accept any arguments, so they should never warn.
Second, pointer types were not handled in matchArgType.
Third, the default response for matchArgType should be false.

R=r
CC=adonovan, golang-dev
https://golang.org/cl/12038050
2013-07-30 13:15:31 +10:00
Alan Donovan
25f3e0fbde go.tools/cmd/vet: improvements to static checking of printf calls.
Details:
- added support for complex numbers as distinct from floats:
  %[efg] allows complex; %b does not.
- %p: only Signature, Map, Chan, Slice, unsafe.Pointer allowed.
- %s: allow []byte.
- allow a verb to match map[K]V and []T if it matches K/V/T,
  e.g. %d now matches []int.  i.e. matching is recursive.
- use go/types' constant folding.  literal() is gone.
- group cases together.

Added tests.

R=gri, r
CC=golang-dev
https://golang.org/cl/10895043
2013-07-15 18:37:49 -04:00
Rob Pike
b042505490 go.tools/cmd/vet: use types.Eval to simplify some checking.
Depends on CL 10748044

R=gri
CC=golang-dev
https://golang.org/cl/11206043
2013-07-13 07:52:00 +10:00
Rob Pike
6740bb0838 go.tools/cmd/vet: delete the word "only" from a warning
No semantic change.

R=dsymonds, rsc
CC=golang-dev
https://golang.org/cl/10516043
2013-06-24 12:56:35 -07:00
Rob Pike
331c428e76 go.tools/cmd/vet: add check for shadowed variables
Experimental feature. It's too noisy yet to be enabled by default,
so it must be enabled explicitly by
        go tool vet -shadow *.go
or
        go tool vet -shadow directory
(The go command does not know about the -shadow flag.)

Fixes golang/go#5634.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/10409047
2013-06-21 11:27:53 -07:00
Rob Pike
df787c2073 go.tools/cmd/vet: check for missing printf verb
A trailing % resulted in a bad error message.
Also clean up a couple of dregs left over from the
refactoring to add indexed formats.

R=dsymonds
CC=golang-dev
https://golang.org/cl/10336044
2013-06-18 08:21:06 -07:00