egl: Add NULL check for eglGetconfigs num_config parameter

EGL 1.4 specification says in 3.4.1:
"An EGL_BAD_PARAMETER error is generated if num config is NULL."

We have to check for the condition and return the required error to
application.

Change-Id: Ib42709f0420161ce661536394d4c0779bc62be57
Original-Change-Id: I4fe670c4362f4ae494f91d69ae105e29ccf3c769
Signed-off-by: Pauli Nieminen <pauli.nieminen@linux.intel.com>

diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index bbbda76..098b710 100644 (file)
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -1441,6 +1441,9 @@ EGLBoolean eglGetConfigs(   EGLDisplay dpy,
     if (egl_display_t::is_valid(dpy) == EGL_FALSE)
         return setError(EGL_BAD_DISPLAY, EGL_FALSE);
 
+    if (!num_config)
+        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
+
     GLint numConfigs = NELEM(gConfigs);
     if (!configs) {
         *num_config = numConfigs;