msvcrt: Fixed strncpy_s behavior when count equals 0.

bdf9a9f9 · Piotr Caban · Alexandre Julliard · 42d75be6 · bdf9a9f9
Commit bdf9a9f9 authored Sep 07, 2012 by Piotr Caban Committed by Alexandre Julliard Sep 07, 2012
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heap.c dlls/msvcrt/heap.c +4 -1

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--- a/dlls/msvcrt/heap.c
+++ b/dlls/msvcrt/heap.c
@@ -598,8 +598,11 @@ int CDECL strncpy_s(char *dest, MSVCRT_size_t numberOfElements,

    TRACE("(%s %lu %s %lu)\n", dest, numberOfElements, src, count);

-    if(!count)
+    if(!count) {
+        if(dest && numberOfElements)
+            *dest = 0;
        return 0;
+    }

    if (!MSVCRT_CHECK_PMT(dest != NULL)) return MSVCRT_EINVAL;
    if (!MSVCRT_CHECK_PMT(src != NULL)) return MSVCRT_EINVAL;