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cmd/compile: trace of escape analysis doesn't have correct position #17459

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hirochachacha opened this issue Oct 16, 2016 · 1 comment
Closed

cmd/compile: trace of escape analysis doesn't have correct position #17459

hirochachacha opened this issue Oct 16, 2016 · 1 comment
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
Milestone
Go1.8

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@hirochachacha
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Please answer these questions before submitting your issue. Thanks!

What did you do?

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

package main

func main() {
    b := []byte("test")

    escape(b)
}

func escape(b []byte) {
    panic(b)
}

$ go build -gcflags "-m=2 -l" p.go

What did you expect to see?

./p.go:4: from b (passed to function[unknown]) at ./p.go:6

What did you see instead?

./p.go:4: from b (passed to function[unknown]) at ./p.go:4

Does this issue reproduce with the latest release (go1.7.1)?

System details

go version devel +be48aa3 Fri Oct 14 23:38:29 2016 +0000 darwin/amd64
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/hiro/.go"
GORACE=""
GOROOT="/Users/hiro/go"
GOTOOLDIR="/Users/hiro/go/pkg/tool/darwin_amd64"
TERM="dumb"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/wq/dwn8hs0x7njbzty9f68y61700000gn/T/go-build108493050=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
uname -v: Darwin Kernel Version 15.6.0: Mon Aug 29 20:21:34 PDT 2016; root:xnu-3248.60.11~1/RELEASE_X86_64
ProductName:    Mac OS X
ProductVersion: 10.11.6
BuildVersion:   15G1004
lldb --version: lldb-360.1.50
gdb --version: GNU gdb (GDB) 7.11.1
@hirochachacha hirochachacha changed the title cmd/compile: escape tracer doesn't have correct position cmd/compile: trace of escape analysis doesn't have correct position Oct 16, 2016
@quentinmit quentinmit added the NeedsFix The path to resolution is known, but the work has not been done. label Oct 17, 2016
@quentinmit quentinmit added this to the Go1.8 milestone Oct 17, 2016
@dr2chase dr2chase self-assigned this Oct 17, 2016
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CL https://golang.org/cl/31660 mentions this issue.

@golang golang locked and limited conversation to collaborators Oct 26, 2017
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Go1.8
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@quentinmit @hirochachacha @dr2chase @gopherbot