1 files changed, 69 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test5/test5.c b/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test5/test5.c
new file mode 100644
index 0000000000..230e65e492
--- /dev/null
+++ b/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test5/test5.c
@@ -0,0 +1,69 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*=============================================================
+**
+** Source: test5.c
+**
+** Purpose: Allocate some memory. Then call HeapRealloc with 0 as the
+** amount of memory to reallocate.  This should work, essentially freeing
+** the memory (though we can't verfiy this)
+**
+**
+**============================================================*/
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    
+    HANDLE TheHeap;
+    char* TheMemory;
+    char* ReAllocMemory;
+    char* ReAllocMemory2;
+
+    if(PAL_Initialize(argc, argv) != 0)
+    {
+        return FAIL;
+    }
+
+    TheHeap = GetProcessHeap();
+
+    if(TheHeap == NULL)
+    {
+        Fail("ERROR: GetProcessHeap() returned NULL when it was called. "
+             "GetLastError() returned %d.",GetLastError());
+    }
+
+    /* Allocate 100 bytes on the heap */
+    if((TheMemory = HeapAlloc(TheHeap, 0, 100)) == NULL)
+    {
+        Fail("ERROR: HeapAlloc returned NULL when it was called.  "
+             "GetLastError() returned %d.",GetLastError());
+    }
+
+    /* Set each byte of that memory block to 'x' */
+    memset(TheMemory, 'X', 100);
+
+    /* Reallocate the memory into 0 bytes */
+    ReAllocMemory = HeapReAlloc(TheHeap, 0, TheMemory, 0);
+
+    if(ReAllocMemory == NULL)
+    {
+        Fail("ERROR: HeapReAlloc failed to reallocate the 100 bytes of "
+             "heap memory. GetLastError returns %d.",GetLastError());
+    }
+
+    /* Reallocate the memory we just put into 0 bytes, into 100 bytes. */
+    ReAllocMemory2 = HeapReAlloc(TheHeap, 0, ReAllocMemory, 100);
+
+    if(ReAllocMemory2 == NULL)
+    {
+        Fail("ERROR: HeapReAlloc failed to reallocate the 0 bytes of "
+             "heap memory into 100. GetLastError returns %d.",GetLastError());
+    }
+
+    PAL_Terminate();
+    return PASS;
+}