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server: Explicitly mark memory as undefined in mem_alloc wrapper. 

Signed-off-by: Sebastian Lackner <sebastian@fds-team.de>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Sebastian Lackner 2017-03-08 04:40:47 +01:00 committed by Alexandre Julliard
parent 65e62c3308
commit 332d592158
1 changed files with 15 additions and 1 deletions
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16
server/object.c
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@ -28,6 +28,9 @@
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include <stdarg.h> #include <stdarg.h>
#ifdef HAVE_VALGRIND_MEMCHECK_H
#include <valgrind/memcheck.h>
#endif
#include "ntstatus.h" #include "ntstatus.h"
#define WIN32_NO_STATUS #define WIN32_NO_STATUS
@ -92,11 +95,22 @@ void close_objects(void)
/*****************************************************************/ /*****************************************************************/
/* mark a block of memory as uninitialized for debugging purposes */
static inline void mark_block_uninitialized( void *ptr, size_t size )
{
memset( ptr, 0x55, size );
#if defined(VALGRIND_MAKE_MEM_UNDEFINED)
VALGRIND_DISCARD( VALGRIND_MAKE_MEM_UNDEFINED( ptr, size ));
#elif defined(VALGRIND_MAKE_WRITABLE)
VALGRIND_DISCARD( VALGRIND_MAKE_WRITABLE( ptr, size ));
#endif
}
/* malloc replacement */ /* malloc replacement */
void *mem_alloc( size_t size ) void *mem_alloc( size_t size )
{ {
void *ptr = malloc( size ); void *ptr = malloc( size );
if (ptr) memset( ptr, 0x55, size ); if (ptr) mark_block_uninitialized( ptr, size );
else set_error( STATUS_NO_MEMORY ); else set_error( STATUS_NO_MEMORY );
return ptr; return ptr;
} }