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Mark __dso_handle as hidden [BZ #18822]

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Since __dso_handle is always defined by either crtbegin.o from GCC or
dso_handle.c, it should be marked as hidden and be passed directly.

	[BZ #18822]
	* dlfcn/modatexit.c (foo): Remove __dso_handle check.
	* dlfcn/modcxaatexit.c: Include <dso_handle.h>.
	(__dso_handle): Remove declaration.
	* dlfcn/tstatexit.c (__dso_handle): Removed.
	(main): Don't check __dso_handle.
	* dlfcn/tstcxaatexit.c (__dso_handle): Removed.
	(main): Don't check __dso_handle.
	* include/dso_handle.h: New file.
	* malloc/mtrace.c: Include <dso_handle.h>.
	(mtrace): Pass __dso_handle directly.
	* nptl/pthread_atfork.c: Include <dso_handle.h>.
	(__dso_handle): Remove declaration.
	(__pthread_atfork): Pass __dso_handle directly.
	* nptl/tst-atfork2mod.c: Include <dso_handle.h>.
	(__dso_handle): Removed.
	* posix/wordexp-test.c: Include <dso_handle.h>.
	(__dso_handle): Remove declaration.
	(__app_register_atfork): Pass __dso_handle directly.
	* stdlib/at_quick_exit.c: Include <dso_handle.h>.
	(__dso_handle): Remove declaration.
	(at_quick_exit): Pass __dso_handle directly.
	* stdlib/atexit.c: Include <dso_handle.h>.
	(__dso_handle): Remove declaration.
	(atexit): Pass __dso_handle directly.
	* stdlib/tst-tls-atexit-lib.c: Include <dso_handle.h>.
	(__dso_handle): Removed.
This commit is contained in:
H.J. Lu
2017-09-26 16:53:25 -07:00
parent bfb0deb355
commit 825adeeed1
13 changed files with 46 additions and 46 deletions
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8
nptl/pthread_atfork.c
View File

@ -35,10 +35,7 @@
#include "pthreadP.h"
#include <fork.h>
/* This is defined by newer gcc version unique for each module. */
extern void *__dso_handle __attribute__ ((__weak__,
__visibility__ ("hidden")));
#include <dso_handle.h>
/* Hide the symbol so that no definition but the one locally in the
@ -51,8 +48,7 @@ attribute_hidden
__pthread_atfork (void (*prepare) (void), void (*parent) (void),
void (*child) (void))
{
return __register_atfork (prepare, parent, child,
&__dso_handle == NULL ? NULL : __dso_handle);
return __register_atfork (prepare, parent, child, __dso_handle);
}
#ifndef __pthread_atfork
extern int pthread_atfork (void (*prepare) (void), void (*parent) (void),