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-rw-r--r--src/mesa/drivers/x11/xm_api.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_api.c b/src/mesa/drivers/x11/xm_api.c
index 2bcbd2c3b0..437c9e2846 100644
--- a/src/mesa/drivers/x11/xm_api.c
+++ b/src/mesa/drivers/x11/xm_api.c
@@ -253,6 +253,7 @@ static int bits_per_pixel( XMesaVisual xmv )
{
const int depth = xmv->nplanes;
int i;
+ assert(depth > 0);
for (i = 0; i < screenInfo.numPixmapFormats; i++) {
if (screenInfo.formats[i].depth == depth)
return screenInfo.formats[i].bitsPerPixel;
@@ -1563,6 +1564,7 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
* ColormapEntries is either (1U << index_bits) or
* (1U << max(redBits, greenBits, blueBits)).
*/
+ assert(visinfo->nplanes > 0);
v->nplanes = visinfo->nplanes;
v->ColormapEntries = visinfo->ColormapEntries;