Changeset 53740 in vbox for trunk/src/VBox/Devices/Graphics/shaderlib/glsl_shader.c

Timestamp:

Jan 5, 2015 10:59:26 PM (10 years ago)

Author:

vboxsync

Message:

VMSVGA3d/constant_heap_init: Don't trash the heap if the input (constant_count) is bogus (0).

File:

• trunk/src/VBox/Devices/Graphics/shaderlib/glsl_shader.c (modified) (1 diff)

trunk/src/VBox/Devices/Graphics/shaderlib/glsl_shader.c

@@ -5052 +5052 @@
 static BOOL constant_heap_init(struct constant_heap *heap, unsigned int constant_count)
 {
+#ifndef VBOX
     SIZE_T size = (constant_count + 1) * sizeof(*heap->entries) + constant_count * sizeof(*heap->positions);
     void *mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
+#else
+    SIZE_T size;
+    void *mem;
+
+    /* Don't trash the heap if the input is bogus. */
+    if (constant_count == 0)
+        constant_count = 1;
+
+    size = (constant_count + 1) * sizeof(*heap->entries) + constant_count * sizeof(*heap->positions);
+    mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
+#endif
 
     if (!mem)