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malloc: Remove malloc_get_state, malloc_set_state [BZ #19473]

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After the removal of __malloc_initialize_hook, newly compiled
Emacs binaries are no longer able to use these interfaces.
malloc_get_state is only used during the Emacs build process,
so we provide a stub implementation only.  Existing Emacs binaries
will not call this stub function, but still reference the symbol.

The rewritten tst-mallocstate test constructs a dumped heap
which should approximates what existing Emacs binaries pass
to glibc malloc.
This commit is contained in:
Florian Weimer
2016-10-26 13:28:28 +02:00
parent 261e6758e7
commit e863cce57b
7 changed files with 512 additions and 108 deletions
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7
malloc/malloc.h
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@ -134,13 +134,6 @@ extern void malloc_stats (void) __THROW;
/* Output information about state of allocator to stream FP. */
extern int malloc_info (int __options, FILE *__fp) __THROW;
/* Record the state of all malloc variables in an opaque data structure. */
extern void *malloc_get_state (void) __THROW;
/* Restore the state of all malloc variables from data obtained with
malloc_get_state(). */
extern int malloc_set_state (void *__ptr) __THROW;
/* Hooks for debugging and user-defined versions. */
extern void (*__MALLOC_HOOK_VOLATILE __free_hook) (void *__ptr,
const void *)