1 files changed, 80 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test4/test4.cpp b/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test4/test4.cpp
new file mode 100644
index 0000000000..cebf904501
--- /dev/null
+++ b/src/pal/tests/palsuite/filemapping_memmgt/HeapReAlloc/test4/test4.cpp
@@ -0,0 +1,80 @@
+// 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: test4.c
+**
+** Purpose: Call HeapReAlloc with a NULL pointer to memory.  It should
+** return NULL.
+**
+**
+**============================================================*/
+
+/* Note: When attempted with a NULL Handle, this test crashes under win32.
+   As such, the behaviour isn't tested here.
+*/
+
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    
+    HANDLE TheHeap;
+    LPVOID TheMemory = NULL;
+
+    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(HeapAlloc(TheHeap, 0, 100) == NULL)
+    {
+        Fail("ERROR: HeapAlloc returned NULL when it was called.  "
+             "GetLastError() returned %d.",GetLastError());
+    }
+
+    /* Call HeapReAlloc with a NULL memory pointer.  It should fail */
+    
+    if(HeapReAlloc(TheHeap, 0, TheMemory, 100) != NULL)
+    {
+        Fail("ERROR: HeapReAlloc was passed an invalid memory pointer.  "
+             "It should have failed and returned NULL upon failure.");
+    }
+
+    if(GetLastError() != 0)
+    {
+        Fail("ERROR: GetLastError should be zero after passing a NULL "
+             "memory pointer to HeapReAlloc.\n");
+    }
+
+    /* Call HeapReAlloc with a size of 0 bytes on a NULL memory pointer.
+       It should still fail.
+    */
+    
+    if(HeapReAlloc(TheHeap, 0, TheMemory, 0) != NULL)
+    {
+        Fail("ERROR: HeapReAlloc was passed an invalid memory pointer and "
+             "the amount of memory to reallocate was 0.  "
+             "It should have failed and returned NULL upon failure.");
+    }
+    
+    if(GetLastError() != 0)
+    {
+        Fail("ERROR: GetLastError should be zero after passing a NULL "
+             "memory pointer to HeapReAlloc.\n");
+    }
+
+    PAL_Terminate();
+    return PASS;
+}