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41 Commits

Author SHA1 Message Date
Robert Griesemer
a6d2a4254e cmd/vet: backport of https://go-review.googlesource.com/#/c/10777/3
Change-Id: I8d63575f2053eda2d7f0a63f3ff862bf0de88d31
Reviewed-on: https://go-review.googlesource.com/10807
Reviewed-by: Alan Donovan <adonovan@google.com>
2015-06-09 16:33:12 +00:00
Robert Griesemer
f0b0213b21 cmd/vet: remove dependency on types.New
In preparation for removal of types.New.

Change-Id: Ieff0c41cf03351124cea32e9b96075a4801c051f
Reviewed-on: https://go-review.googlesource.com/10775
Reviewed-by: Rob Pike <r@golang.org>
2015-06-05 20:06:37 +00:00
Robert Griesemer
850ba653f7 Revert "cmd/vet: switch to go/types from std repo"
This reverts commit 5b72e8e9bb.

Change-Id: I75270045022d69444b7812f290cdd5861af13feb
Reviewed-on: https://go-review.googlesource.com/8915
Reviewed-by: Robert Griesemer <gri@golang.org>
2015-04-14 03:54:48 +00:00
Robert Griesemer
5b72e8e9bb cmd/vet: switch to go/types from std repo
Depends on https://golang.org/cl/8767/.

With this change, cmd/vet does not depend on x/tools anymore
and could be moved into the std repo if so desired.

Change-Id: Ia205c6e1a6a63eebb27776064e5c24491043b683
Reviewed-on: https://go-review.googlesource.com/8791
Reviewed-by: Rob Pike <r@golang.org>
2015-04-14 00:30:21 +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
Russ Cox
c7a00958ec cmd/vet: fix unnamed FP check
While we're here, silence a print about failure to import fmt.
When it prints, it looks like a problem, and in fact the result
is never used in vet.

Change-Id: I76121b335026a2b09637608b997517be94fd167c
Reviewed-on: https://go-review.googlesource.com/5573
Reviewed-by: Rob Pike <r@golang.org>
2015-02-23 19:33:41 +00:00
Andrew Gerrand
5ebbcd132f go.tools: use golang.org/x/... import paths
Rewrite performed with this command:
  sed -i '' 's_code.google.com/p/go\._golang.org/x/_g' \
    $(grep -lr 'code.google.com/p/go.' *)

LGTM=rsc
R=rsc
CC=golang-codereviews
https://golang.org/cl/170920043
2014-11-10 08:50:40 +11:00
David Symonds
26439e8d81 cmd/vet: return nil from importType if it fails.
This permits vet to not panic during init if fmt.a is unavailable.

LGTM=r
R=gri, r
CC=golang-codereviews
https://golang.org/cl/153590043
2014-10-15 16:56:09 +11:00
Rob Pike
9be0b38f5b cmd/vet: don't panic if import fails
Initializing the unused variable formatterType (it will be used soon) was
panicking if the import couldn't be done, but vet shouldn't be so fragile.

LGTM=gri
R=gri
CC=dsymonds, golang-codereviews
https://golang.org/cl/153480044
2014-10-14 12:55:46 -07:00
Robert Griesemer
315249fc55 cmd/vet: provide access to externally defined types
Preliminaries for fixing issue 6212.

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/145370043
2014-09-24 13:54:50 -07:00
Robert Griesemer
5dca7d8bd1 go.tools/go/types: LookupFieldOrMethod checks method set
LookupFieldOrMethod now also decides whether a found
method is actually in the method set. Simplifies call
sites. Added corresponding API tests.

TODO (separate CL): Decide what the correct value for
the indirect result should be (as required for code
generation). For now, the result value for indirect
is unchanged from before if a field/method is found.

Fixes golang/go#8584.

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://golang.org/cl/132260043
2014-08-28 13:03:13 -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
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
Alan Donovan
ced954c167 go.tools/go/types: split Info.Objects map into Defs and Uses.
An identifier X in anonymous struct field struct{X} is both a
definition of a field (*Var) and reference to a type
(*TypeName).  Now that we have split the map, we can capture
both of these aspects.

Interestingly, every client but one was going to extra effort
to iterate over just the uses or just the defs; this
simplifies them.

Also, fix two bug related to tagless switches:
- An entry was being recorded in the Object map for a piece of
  synthetic syntax.
- The "true" identifier was being looked up in the current scope,
  which allowed perverse users to locally redefine it.  Now
  we use the bool (not untyped boolean) constant true, per the
  consequent clarification of the spec (issue 7404).

+ tests.

Fixes golang/go#7276

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/68270044
2014-02-27 13:21:59 -05:00
Alan Donovan
1f29e74bfa go.tools/go/types: remove Type.MethodSet() method.
Method-set caching is now performed externally using a MethodSetCache (if desired), not by the Types themselves.

This a minor deoptimization due to the extra maps, but avoids a situation in which method-sets are computed and frozen prematurely. (See b/7114)

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/61430045
2014-02-11 16:49:27 -05:00
Robert Griesemer
20efc5ba73 go.tools/go/types: use init cycle tracking for all const and var cycles
Also rename types.Assertable -> types.AssertableTo per adonovan.

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://golang.org/cl/59680044
2014-02-03 16:02:56 -08:00
Robert Griesemer
4dcaee97b2 go.tools/cmd/vet: use new Assertable predicate (fix build)
LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/59210045
2014-02-03 11:39:10 -08:00
Alan Donovan
64ec206bfd go.tools/go/types: combine Info.{Types,Values} maps.
This results in significant improvement to type-checking time:
it reduces by 4% the entire running time of ssa/stdlib_test
(GOMAXPROCS=8, n=7).

LGTM=gri
R=gri
CC=golang-codereviews
https://golang.org/cl/57770043
2014-01-28 16:46:24 -05:00
Robert Griesemer
ebfa4efbc4 go.tools/go/types: cleanup: more consistent exported predicate names
Renamed predicates:
IsIdentical -> Identical
IsAssignableTo -> AssignableTo
Signature.IsVariadic -> Signature.Variadic
Object.IsExported -> Object.Exported

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://golang.org/cl/53370043
2014-01-28 10:57:56 -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
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
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
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
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
40baf75587 cmd/vet: Avoid warning on pointer to invalid types.
TBR=r
CC=golang-dev
https://golang.org/cl/12038051
2013-07-30 13:41:07 +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
Robert Griesemer
40a278e5ee go.tools/go/types: rename Context -> Config (more apt name)
Also: Various minor cleanups.

R=adonovan, r
CC=golang-dev
https://golang.org/cl/11445044
2013-07-18 17:07:44 -07:00
Robert Griesemer
6d85cc17dd go.tools/go/types: request type Info via maps instead of callbacks
Allmost all uses of go/types that wanted the type
information computed, installed callback functions
that stored the information in maps. Most of the
time this is the only thing that could be done because
there is no guarantee that types are completely set
up before the end of type-checking.

This CL removes the respective Context callbacks in favor
of corresponding maps that collect the desired information
on demand, grouped together in an optional Info struct.

R=adonovan
CC=golang-dev
https://golang.org/cl/11530044
2013-07-18 13:09:03 -07:00
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
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
3402cf10ab go.tools/cmd/vet: verify printf for String and Error implementers
Fixes golang/go#5624.

R=adonovan
CC=gobot, golang-dev, gri
https://golang.org/cl/9657048
2013-06-06 16:05:14 -07:00
Rob Pike
c7f7fa1381 cmd/vet: simplify format checker
Simplify the code a bit, get it working after recent go/types changes,
and handle "%*%" just in case. Preparation for handling argument indexing.

R=gri
CC=golang-dev
https://golang.org/cl/9747045
2013-05-28 15:37:34 -04:00
Rob Pike
08cc526448 go.tools/cmd/vet: update to new go/types package
Now that it's in the same repository as the go/types package we can delete
the mechanism to build it without type checking.

Add a make rule to install it where the go tool can find it.
Why doesn't "go install" take a -o flag?

R=gri
CC=gobot, golang-dev
https://golang.org/cl/9526043
2013-05-20 12:20:05 -07:00
Rob Pike
01f8cd246d go.tools: add go/types, ssa, and cmd/vet
They will be deleted from their current homes once this has landed.
Changes made to import paths to make the code compile, and to find
errchk in the right place in cmd/vet's Makefile.
TODO in a later CL: tidy up vet.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/9495043
2013-05-17 13:20:39 -07:00