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runtime: call _exit, not exit, on AIX and Solaris

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This is the AIX and Solaris equivalent of CL 269378.

On AIX and Solaris, where we use libc for syscalls, when the runtime exits,
it calls the libc exit function, which may call back into user code,
such as invoking functions registered with atexit. In particular, it
may call back into Go. But at this point, the Go runtime is
already exiting, so this wouldn't work.

On non-libc platforms we use exit syscall directly, which doesn't
invoke any callbacks. Use _exit on AIX and Solaris to achieve the same
behavior.

Test is TestDestructorCallback.

For #59711

Change-Id: I666f75538d3e3d8cf3b697b4c32f3ecde8332890
Reviewed-on: https://go-review.googlesource.com/c/go/+/487635
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Ian Lance Taylor 2023-04-21 18:48:38 -07:00 committed by Gopher Robot
parent a5297f59a7
commit 6bbbc5dc70
2 changed files with 2 additions and 2 deletions
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2
src/runtime/os2_aix.go
View File

@ -31,7 +31,7 @@ var (
//go:cgo_import_dynamic libc__Errno _Errno "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_clock_gettime clock_gettime "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_close close "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_exit exit "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_exit _exit "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getpid getpid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getsystemcfg getsystemcfg "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_kill kill "libc.a/shr_64.o"

2
src/runtime/os3_solaris.go
View File

@ -17,7 +17,7 @@ import (
//go:cgo_import_dynamic libc____errno ___errno "libc.so"
//go:cgo_import_dynamic libc_clock_gettime clock_gettime "libc.so"
//go:cgo_import_dynamic libc_exit exit "libc.so"
//go:cgo_import_dynamic libc_exit _exit "libc.so"
//go:cgo_import_dynamic libc_getcontext getcontext "libc.so"
//go:cgo_import_dynamic libc_kill kill "libc.so"
//go:cgo_import_dynamic libc_madvise madvise "libc.so"