ntdll: Fix valgrind heap realloc notifications.

Valgrind can't handle a realloc if the new size is zero. Signed-off-by: Thomas Faller <tfaller1@gmx.de> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ntdll: Fix valgrind heap realloc notifications.
a0b8f178 · Thomas Faller · Alexandre Julliard · 86df15cb · a0b8f178
Commit a0b8f178 authored Dec 16, 2015 by Thomas Faller Committed by Alexandre Julliard Dec 21, 2015
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heap.c dlls/ntdll/heap.c +2 -1

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--- a/dlls/ntdll/heap.c
+++ b/dlls/ntdll/heap.c
@@ -266,7 +266,8 @@ static inline void notify_free( void const *ptr )
 static inline void notify_realloc( void const *ptr, SIZE_T size_old, SIZE_T size_new )
 {
 #ifdef VALGRIND_RESIZEINPLACE_BLOCK
-    VALGRIND_RESIZEINPLACE_BLOCK( ptr, size_old, size_new, 0 );
+    /* zero is not a valid size */
+    VALGRIND_RESIZEINPLACE_BLOCK( ptr, size_old ? size_old : 1, size_new ? size_new : 1, 0 );
 #endif
 }