egl: don't allow eglGetConfigs to set num_configs param to a negative value

[mesa.git] / src / egl / main / eglarray.c

diff --git a/src/egl/main/eglarray.c b/src/egl/main/eglarray.c
index fe2f1a7f32fcd4988896d1dbf62b5f451f3d013d..d2f39af49a677df61e3963c724c034a66fe2b9f1 100644 (file)
--- a/src/egl/main/eglarray.c
+++ b/src/egl/main/eglarray.c
@@ -1,3 +1,31 @@
+/**************************************************************************
+ *
+ * Copyright 2010 LunarG, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
 #include <stdlib.h>
 #include <string.h>
 
@@ -169,6 +197,9 @@ _eglFlattenArray(_EGLArray *array, void *buffer, EGLint elem_size, EGLint size,
 
    count = array->Size;
    if (buffer) {
+      /* clamp size to 0 */
+      if (size < 0)
+         size = 0;
       /* do not exceed buffer size */
       if (count > size)
          count = size;