Use exception handler for GlobalUnlock, GlobalFree.

memory/global.c

@@ -1106,12 +1106,12 @@ BOOL WINAPI GlobalUnlock(
     PGLOBAL32_INTERN pintern;
     BOOL locked;
 
-   if(ISPOINTER(hmem))
-      return FALSE;
+    if (ISPOINTER(hmem)) return FALSE;
 
+    __TRY
+    {
         /* HeapLock(GetProcessHeap()); */
         pintern=HANDLE_TO_INTERN(hmem);
-   
         if(pintern->Magic==MAGIC_GLOBAL_USED)
         {
             if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
@@ -1127,6 +1127,14 @@ BOOL WINAPI GlobalUnlock(
             locked=FALSE;
         }
         /* HeapUnlock(GetProcessHeap()); */
+    }
+    __EXCEPT(page_fault)
+    {
+        ERR("page fault occurred ! Caused by bug ?\n");
+        SetLastError( ERROR_INVALID_PARAMETER );
+        return FALSE;
+    }
+    __ENDTRY
     return locked;
 }
 
@@ -1306,8 +1314,11 @@ HGLOBAL WINAPI GlobalFree(
                  HGLOBAL hmem /* [in] Handle of global memory object */
 ) {
     PGLOBAL32_INTERN pintern;
-   HGLOBAL        hreturned = 0;
+    HGLOBAL hreturned;
 
+    __TRY
+    {
+        hreturned = 0;
         if(ISPOINTER(hmem)) /* POINTER */
         {
             if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
@@ -1320,8 +1331,8 @@ HGLOBAL WINAPI GlobalFree(
             if(pintern->Magic==MAGIC_GLOBAL_USED)
             {
 
-/* WIN98 does not make this test. That is you can free a */
-/* block you have not unlocked. Go figure!!              */
+                /* WIN98 does not make this test. That is you can free a */
+                /* block you have not unlocked. Go figure!!              */
                 /* if(pintern->LockCount!=0)  */
                 /*    SetLastError(ERROR_INVALID_HANDLE);  */
 
@@ -1333,6 +1344,14 @@ HGLOBAL WINAPI GlobalFree(
             }
             /* HeapUnlock(heap); */
         }
+    }
+    __EXCEPT(page_fault)
+    {
+        ERR("page fault occurred ! Caused by bug ?\n");
+        SetLastError( ERROR_INVALID_PARAMETER );
+        return hmem;
+    }
+    __ENDTRY
     return hreturned;
 }