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2005-06-03 Jeff Johnston <jjohnstn@redhat.com>

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* libc/stdlib/mallocr.c (MALLOC_COPY): Switch to use memmove
        instead of memcpy.
This commit is contained in:
Jeff Johnston 2005-06-03 18:57:30 +00:00
parent d9f491a77d
commit 15c04fd16e
2 changed files with 12 additions and 1 deletions
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5
newlib/ChangeLog
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@ -1,3 +1,8 @@
2005-06-03 Jeff Johnston <jjohnstn@redhat.com>
* libc/stdlib/mallocr.c (MALLOC_COPY): Switch to use memmove
instead of memcpy.
2005-05-12 Jeff Johnston <jjohnstn@redhat.com> 2005-05-12 Jeff Johnston <jjohnstn@redhat.com>
* configure.host (mn10300-*): Add long long I/O support by default. * configure.host (mn10300-*): Add long long I/O support by default.

8
newlib/libc/stdlib/mallocr.c
View file

@ -487,6 +487,10 @@ extern void __malloc_unlock();
#define HAVE_MEMCPY #define HAVE_MEMCPY
/* Although the original macro is called USE_MEMCPY, newlib actually
uses memmove to handle cases whereby a platform's memcpy implementation
copies backwards and thus destructive overlap may occur in realloc
whereby we are reclaiming free memory prior to the old allocation. */
#ifndef USE_MEMCPY #ifndef USE_MEMCPY
#ifdef HAVE_MEMCPY #ifdef HAVE_MEMCPY
#define USE_MEMCPY 1 #define USE_MEMCPY 1
@ -500,9 +504,11 @@ extern void __malloc_unlock();
#if __STD_C #if __STD_C
void* memset(void*, int, size_t); void* memset(void*, int, size_t);
void* memcpy(void*, const void*, size_t); void* memcpy(void*, const void*, size_t);
void* memmove(void*, const void*, size_t);
#else #else
Void_t* memset(); Void_t* memset();
Void_t* memcpy(); Void_t* memcpy();
Void_t* memmove();
#endif #endif
#endif #endif
@ -544,7 +550,7 @@ do { \
*mcdst++ = *mcsrc++; \ *mcdst++ = *mcsrc++; \
*mcdst++ = *mcsrc++; \ *mcdst++ = *mcsrc++; \
*mcdst = *mcsrc ; \ *mcdst = *mcsrc ; \
} else memcpy(dest, src, mcsz); \ } else memmove(dest, src, mcsz); \
} while(0) } while(0)
#else /* !USE_MEMCPY */ #else /* !USE_MEMCPY */