Drawable and readable need to either both be None or both be non-None.
Cc: <[email protected]>
Signed-off-by: Adam Jackson <[email protected]>
---
src/glx/glxcurrent.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/glx/glxcurrent.c b/src/glx/glxcurrent.c
index fd04929b89f..2b9c708c3ee 100644
--- a/src/glx/glxcurrent.c
+++ b/src/glx/glxcurrent.c
@@ -194,6 +194,13 @@ MakeContextCurrent(Display * dpy, GLXDrawable draw,
return True;
}
+ /* can't have only one be 0 */
+ if (!!draw != !!read) {
+ __glXUnlock();
+ __glXSendError(dpy, BadMatch, None, X_GLXMakeContextCurrent, True);
+ return False;
+ }
+
if (oldGC != &dummyContext) {
if (--oldGC->thread_refcount == 0) {
oldGC->vtable->unbind(oldGC, gc);
--
2.17.0
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