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path: root/misc/cgo/errors/ptr_test.go
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2023-02-16runtime: reimplement GODEBUG=cgocheck=2 as a GOEXPERIMENTKeith Randall
Move this knob from a binary-startup thing to a build-time thing. This will enable followon optmizations to the write barrier. Change-Id: Ic3323348621c76a7dc390c09ff55016b19c43018 Reviewed-on: https://go-review.googlesource.com/c/go/+/447778 Reviewed-by: Michael Knyszek <mknyszek@google.com> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
2021-04-05all: update references to symbols moved from io/ioutil to ioKimMachineGun
Update references missed in CL 263142. For #41190 Change-Id: I778760a6a69bd0440fec0848bdef539c9ccb4ee1 GitHub-Last-Rev: dda42b09fff36dc08ec1cdec50cc19e3da5058e5 GitHub-Pull-Request: golang/go#42874 Reviewed-on: https://go-review.googlesource.com/c/go/+/273946 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Cherry Zhang <cherryyz@google.com>
2019-07-09cmd/cgo: fix check for conversion of ptr to struct fieldGernot Vormayr
According to the documentation "When passing a pointer to a field in a struct, the Go memory in question is the memory occupied by the field, not the entire struct.". checkAddr states that this should also work with type conversions, which is implemented in isType. However, ast.StarExpr must be enclosed in ast.ParenExpr according to the go spec (see example below), which is not considered in the checks. Example: // struct Si { int i; int *p; }; void f(struct I *x) {} import "C" type S { p *int i C.struct_Si } func main() { v := &S{new(int)} C.f((*C.struct_I)(&v.i)) // <- panic } This example will cause cgo to emit a cgoCheck that checks the whole struct S instead of just S.i causing the panic "cgo argument has Go pointer to Go pointer". This patch fixes this situation by adding support for ast.ParenExpr to isType and adds a test, that fails without the fix. Fixes #32970. Change-Id: I15ea28c98f839e9fa708859ed107a2e5f1483133 Reviewed-on: https://go-review.googlesource.com/c/go/+/185098 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-06-27misc/cgo/errors: align code snippets in ptr_test.goBryan C. Mills
Change-Id: Ic3e2819617375df653116d21d7361a46085250d5 Reviewed-on: https://go-review.googlesource.com/c/go/+/183986 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-06-26misc/cgo/errors: fix TestPointerChecks when GO111MODULE=onBryan C. Mills
Change-Id: I4e9e46f03c9c43df1d0c6995f3baedd2e1a04c6a Reviewed-on: https://go-review.googlesource.com/c/go/+/183985 Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com>
2019-05-31misc/cgo/errors: limit number of parallel executionsIan Lance Taylor
Fixes #32328 Change-Id: Iee71ecb247f2c439804c2ff03a6ed7b7f5a8b562 Reviewed-on: https://go-review.googlesource.com/c/go/+/179603 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2019-05-30misc/cgo/errors: remove debugging printlnIan Lance Taylor
Change-Id: I0c7da31e94307f939e1a2f023e00d5b24bac0ea6 Reviewed-on: https://go-review.googlesource.com/c/go/+/179604 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-05-21misc/cgo/errors: consolidate test workRuss Cox
Build a single binary containing all the TestPointerChecks instead of building many small binaries, each with its own cgo+compile+link invocation. This cuts 'go test -run=TestPointerChecks' from 6.7r 35.5u 26.1s to 2.1r 2.1u 1.4s. Move as many cgo checks as possible into fewer test files for TestReportsTypeErrors too. This cuts 'go test -run=TestReportsTypeErrors' from 2.1r 6.7u 6.7s to 1.5r 2.5u 2.5s. After this change, all.bash runs in ~4:30 on my laptop. For #26473. Change-Id: I3787448b03689a1f62dd810957ab6013bb75582f Reviewed-on: https://go-review.googlesource.com/c/go/+/177599 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2019-02-22misc/cgo/errors: fix tests in module modeBryan C. Mills
Updates #30228 Change-Id: I84bc705591bdb3da0106404b24353251939355b8 Reviewed-on: https://go-review.googlesource.com/c/163209 Reviewed-by: Jay Conrod <jayconrod@google.com>
2019-01-04runtime: skip writes to persistent memory in cgo checkerIan Lance Taylor
Fixes #23899 Fixes #28458 Change-Id: Ie177f2d4c399445d8d5e1a327f2419c7866cb45e Reviewed-on: https://go-review.googlesource.com/c/155697 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2018-11-01cmd/cgo: rewrite pointer checking to use more function literalsIan Lance Taylor
Fixes #14210 Fixes #25941 Change-Id: Idde2d032290da3edb742b5b4f6ffeb625f05b494 Reviewed-on: https://go-review.googlesource.com/c/142884 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2018-01-15runtime: don't issue cgocheck error for timer bucket source pointerIan Lance Taylor
The cgo checker was issuing an error with cgocheck=2 when a timer bucket was stored in a pollDesc. The pollDesc values are allocated using persistentalloc, so they are not in the Go heap. The code is OK since timer bucket pointers point into a global array, and as such are never garbage collected or moved. Mark timersBucket notinheap to avoid the problem. timersBucket values only occur in the global timers array. Fixes #23435 Change-Id: I835f31caafd54cdacc692db5989de63bb49e7697 Reviewed-on: https://go-review.googlesource.com/87637 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-09-13misc/cgo/errors: port test.bash to GoBryan C. Mills
This makes the test easier to run in isolation and easier to change, and simplifies the code to run the tests in parallel. updates #13467 Change-Id: I5622b5cc98276970347da18e95d071dbca3c5cc1 Reviewed-on: https://go-review.googlesource.com/63276 Run-TryBot: Bryan Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>