[gedmurphy] 22078: Fix possible memory leak in ProbeAndCaptureUnicodeString Patch from Thomas Weidenmueller

Author: gedmurphy
Date: Sat May 27 19:06:51 2006
New Revision: 22078

URL: http://svn.reactos.ru/svn/reactos?rev=22078&view=rev
Log:
Fix possible memory leak in ProbeAndCaptureUnicodeString
Patch from Thomas Weidenmueller

Modified:
    trunk/reactos/include/reactos/probe.h

Modified: trunk/reactos/include/reactos/probe.h
URL: http://svn.reactos.ru/svn/reactos/trunk/reactos/include/reactos/probe.h?rev=...
==============================================================================
--- trunk/reactos/include/reactos/probe.h (original)
+++ trunk/reactos/include/reactos/probe.h Sat May 27 19:06:51 2006
@@ -31,7 +31,7 @@

#define ProbeForWriteBoolean(Ptr) ProbeForWriteGenericType(Ptr, BOOLEAN)
 #define ProbeForWriteUchar(Ptr) ProbeForWriteGenericType(Ptr, UCHAR)
-#define ProbeForWriteChar(Ptr) ProbeForWriteGenericType(Ptr, Char)
+#define ProbeForWriteChar(Ptr) ProbeForWriteGenericType(Ptr, CHAR)
 #define ProbeForWriteUshort(Ptr) ProbeForWriteGenericType(Ptr, USHORT)
 #define ProbeForWriteShort(Ptr) ProbeForWriteGenericType(Ptr, SHORT)
 #define ProbeForWriteUlong(Ptr) ProbeForWriteGenericType(Ptr, ULONG)
@@ -85,7 +85,7 @@
                              IN PUNICODE_STRING UnsafeSrc)
 {
     NTSTATUS Status = STATUS_SUCCESS;
-    WCHAR *Buffer;
+    WCHAR *Buffer = NULL;
     ASSERT(Dest != NULL);

/* Probe the structure and buffer*/
@@ -136,6 +136,16 @@
         }
         _SEH_HANDLE
         {
+            /* Free allocated resources and zero the destination string */
+            if (Buffer != NULL)
+            {
+                ExFreePool(Buffer);
+            }
+            Dest->Length = 0;
+            Dest->MaximumLength = 0;
+            Dest->Buffer = NULL;
+
+            /* Return the error code */
             Status = _SEH_GetExceptionCode();
         }
         _SEH_END;