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malloc: Deprecate more hook-related functionality

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__morecore, __after_morecore_hook, and __default_morecore had not
been deprecated in commit 7d17596c19
("Mark malloc hook variables as deprecated"), probably by accident.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer 2020-07-13 09:58:37 +02:00
parent 48699da1c4
commit e72b98e6f8
2 changed files with 11 additions and 3 deletions
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7
NEWS
View File

@ -142,6 +142,13 @@ Deprecated and removed features, and other changes affecting compatibility:
storing RPC keys only supported the obsolete and insecure AUTH_DES storing RPC keys only supported the obsolete and insecure AUTH_DES
flavor of secure RPC.) flavor of secure RPC.)
* The __morecore and __after_morecore_hook malloc hooks and the default
implementation __default_morecore have been deprecated. Applications
should use malloc interposition to change malloc behavior, and mmap to
allocate anonymous memory. A future version of glibc may require that
applications which use the malloc hooks must preload a special shared
object, to enable the hooks.
Changes to build and runtime requirements: Changes to build and runtime requirements:
* powerpc64le requires GCC 7.4 or newer. This is required for supporting * powerpc64le requires GCC 7.4 or newer. This is required for supporting

7
malloc/malloc.h
View File

@ -75,11 +75,11 @@ extern void *pvalloc (size_t __size) __THROW __attribute_malloc__ __wur;
/* Underlying allocation function; successive calls should return /* Underlying allocation function; successive calls should return
contiguous pieces of memory. */ contiguous pieces of memory. */
extern void *(*__morecore) (ptrdiff_t __size); extern void *(*__morecore) (ptrdiff_t __size) __MALLOC_DEPRECATED;
/* Default value of `__morecore'. */ /* Default value of `__morecore'. */
extern void *__default_morecore (ptrdiff_t __size) extern void *__default_morecore (ptrdiff_t __size)
__THROW __attribute_malloc__; __THROW __attribute_malloc__ __MALLOC_DEPRECATED;
/* SVID2/XPG mallinfo structure */ /* SVID2/XPG mallinfo structure */
@ -156,7 +156,8 @@ extern void *(*__MALLOC_HOOK_VOLATILE __memalign_hook)(size_t __alignment,
size_t __size, size_t __size,
const void *) const void *)
__MALLOC_DEPRECATED; __MALLOC_DEPRECATED;
extern void (*__MALLOC_HOOK_VOLATILE __after_morecore_hook) (void); extern void (*__MALLOC_HOOK_VOLATILE __after_morecore_hook) (void)
__MALLOC_DEPRECATED;
__END_DECLS __END_DECLS