ren MALLOC to malloc, fix malloc overflow on large sizes

src/HEAP32/malloc.c

@@ -0,0 +1,41 @@
+/* Copyright (C) 1986-1994 by Digital Mars. $Revision: 1.1.1.1 $ */
+
+#include <stdlib.h>
+#include "semlock.h"
+#include "multpool.h"
+
+#if __cplusplus
+extern "C" {
+#endif
+
+void *malloc (size_t m_size)
+{
+#if USEHEAP
+    /* The +2 is because there's a buffer overflow somewhere in stlport.
+     * It is triggered by stltutorial\ex13-01.cpp
+     */
+#if _WIN32
+    /* Set a max size because of access violations in Win32 Heap functions.
+     * Size is determined experimentally.
+     */
+    if (m_size < 0xD5550000)
+	return HeapAlloc(_default_heap, 0, m_size + 2);
+    return NULL;
+#else
+    return HeapAlloc(_default_heap, 0, m_size + 2);
+#endif
+#else
+    void *p;
+
+    LockSemaphore(_semAlloc);
+    p = RTLMultiPool::GetMainHeap()->Alloc(m_size);
+    UnlockSemaphore(_semAlloc);
+
+    return p;
+#endif
+}
+
+#if __cplusplus
+}
+#endif
+