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glx/drisw: return false if shmid == -1
[mesa.git]
/
src
/
glx
/
drisw_glx.c
diff --git
a/src/glx/drisw_glx.c
b/src/glx/drisw_glx.c
index 6e37f0274b04e0f2be84fc2ef715ce6f635fff75..dfa3218d759ecf61d4fab2cc970545e77f64cd85 100644
(file)
--- a/
src/glx/drisw_glx.c
+++ b/
src/glx/drisw_glx.c
@@
-303,6
+303,9
@@
swrastGetImageShm2(__DRIdrawable * read,
if (!XCreateDrawable(prp, shmid, dpy))
return GL_FALSE;
}
+
+ if (prp->shminfo.shmid == -1)
+ return GL_FALSE;
readable = pread->xDrawable;
ximage = prp->ximage;