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runtime: adjust traceback for new preemptive reality

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Currently it crashes as follows:
fatal error: unknown pc
...
goroutine 71698 [runnable]:
runtime.racegoend()
        src/pkg/runtime/race.c:171
runtime.goexit()
        src/pkg/runtime/proc.c:1276 +0x9
created by runtime_test.testConcurrentReadsAfterGrowth
        src/pkg/runtime/map_test.go:264 +0x332

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/10674047
This commit is contained in:
Dmitriy Vyukov 2013-07-11 13:52:20 -04:00 committed by Russ Cox
parent c77baac560
commit 01e1b0cb53
2 changed files with 2 additions and 2 deletions
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2
src/pkg/runtime/traceback_arm.c
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@ -164,7 +164,7 @@ runtime·gentraceback(uintptr pc0, uintptr sp0, uintptr lr0, G *gp, int32 skip,
waspanic = f->entry == (uintptr)runtime·sigpanic;
// Do not unwind past the bottom of the stack.
if(frame.pc == (uintptr)runtime·goexit || f->entry == (uintptr)runtime·mstart || f->entry == (uintptr)_rt0_go)
if(f->entry == (uintptr)runtime·goexit || f->entry == (uintptr)runtime·mstart || f->entry == (uintptr)_rt0_go)
break;
// Unwind to next frame.

2
src/pkg/runtime/traceback_x86.c
View File

@ -170,7 +170,7 @@ runtime·gentraceback(uintptr pc0, uintptr sp0, uintptr lr0, G *gp, int32 skip,
frame.fp += 2*sizeof(uintptr);
// Do not unwind past the bottom of the stack.
if(frame.pc == (uintptr)runtime·goexit || f->entry == (uintptr)runtime·mstart || f->entry == (uintptr)_rt0_go)
if(f->entry == (uintptr)runtime·goexit || f->entry == (uintptr)runtime·mstart || f->entry == (uintptr)_rt0_go)
break;
// Unwind to next frame.