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malloc: Remove __malloc_initialize_hook from the API [BZ #19564]

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__malloc_initialize_hook is interposed by application code, so
the usual approach to define a compatibility symbol does not work.
This commit adds a new mechanism based on #pragma GCC poison in
<stdc-predef.h>.
This commit is contained in:
Florian Weimer
2016-06-10 10:46:05 +02:00
parent f00faa4a43
commit 2ba3cfa160
10 changed files with 92 additions and 30 deletions
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4
malloc/arena.c
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@ -340,9 +340,11 @@ ptmalloc_init (void)
if (check_action != 0)
__malloc_check_init ();
}
void (*hook) (void) = atomic_forced_read (__malloc_initialize_hook);
#if HAVE_MALLOC_INIT_HOOK
void (*hook) (void) = atomic_forced_read (old__malloc_initialize_hook);
if (hook != NULL)
(*hook)();
#endif
__malloc_initialized = 1;
}