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Remove __malloc_ptrdiff_t

This patch, relative to a tree with
<> (pending
review) applied, removes the __malloc_ptrdiff_t macro, which is no
longer a useful abstraction, replacing its single use by a direct use
of ptrdiff_t.  Tested x86_64.

2013-03-07  Joseph Myers  <>

	* malloc/malloc.h (__malloc_ptrdiff_t): Remove macro.
	* malloc/morecore.c (__default_morecore): Use ptrdiff_t instead of

diff --git a/malloc/malloc.h b/malloc/malloc.h
index 4695b7d..cd691f1 100644
--- a/malloc/malloc.h
+++ b/malloc/malloc.h
@@ -24,9 +24,6 @@
 #include <stdio.h>
 # define __malloc_ptr_t  void *
-/* Used by GNU libc internals. */
-#define __malloc_ptrdiff_t ptrdiff_t
 #ifdef _LIBC
diff --git a/malloc/morecore.c b/malloc/morecore.c
index 3b19406..57284e0 100644
--- a/malloc/morecore.c
+++ b/malloc/morecore.c
@@ -43,7 +43,7 @@ libc_hidden_proto (__sbrk)
    If INCREMENT is negative, shrink data space.  */
 __default_morecore (increment)
-     __malloc_ptrdiff_t increment;
+     ptrdiff_t increment;
   __malloc_ptr_t result = (__malloc_ptr_t) __sbrk (increment);
   if (result == (__malloc_ptr_t) -1)

Joseph S. Myers

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