1 files changed, 50 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/filemapping_memmgt/VirtualAlloc/test20/virtualalloc.cpp b/src/pal/tests/palsuite/filemapping_memmgt/VirtualAlloc/test20/virtualalloc.cpp
new file mode 100644
index 0000000000..7aec3c7f55
--- /dev/null
+++ b/src/pal/tests/palsuite/filemapping_memmgt/VirtualAlloc/test20/virtualalloc.cpp
@@ -0,0 +1,50 @@
+// 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:  virtualalloc.c
+**
+** Purpose: Positive test the VirtualAlloc API.
+**          Ensure that memory re-committed through VirtualAlloc
+**          is not changed.
+**
+**
+**============================================================*/
+#include <palsuite.h>
+
+int __cdecl main(int argc, char *argv[])
+{
+    int err;
+    int *ptr;
+
+    //Initialize the PAL environment
+    err = PAL_Initialize(argc, argv);
+    if(0 != err)
+    {
+        ExitProcess(FAIL);
+    }
+    
+    ptr = (int *) VirtualAlloc(NULL, 4096, MEM_COMMIT | MEM_RESERVE,
+                               PAGE_READWRITE);
+    if (ptr == NULL)
+    {
+        Fail("First VirtualAlloc failed!\n");
+    }
+    
+    *ptr = 123;
+
+    ptr = (int *) VirtualAlloc(ptr, 4096, MEM_COMMIT, PAGE_READWRITE);
+    if (ptr == NULL)
+    {
+        Fail("Second VirtualAlloc failed!\n");
+    }
+    if (*ptr != 123)
+    {
+        Fail("VirtualAlloc modified (probably zeroed) re-committed memory!\n");
+    }
+
+    PAL_Terminate();
+    return PASS;
+}