mesa: Don't write to user buffer in glGetTexParameterIuiv on error
With some sets of optimization flags, GCC will generate warnings like
this:
src/mesa/main/texparam.c:2327:27: warning: ‘*((void *)&ip+12)’ may be used uninitialized in this function [-Wmaybe-uninitialized]
params[3] = ip[3];
~~^~~
src/mesa/main/texparam.c:2320:16: note: ‘*((void *)&ip+12)’ was declared here
GLint ip[4];
^~
ip is not initialized in cases where a GL error is generated. In these
cases, we should *not* write to the user's buffer, so this is actually a
bug. I wrote a new piglit test gl-3.0-texparameteri to show this bug.
I suspect that Coverity also detected this, but the scan site is
currently down.
Fixes: c2c507786 "main: Added entry points for glGetTextureParameteriv, Iiv, and Iuiv."
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
(cherry picked from commit def0030e64dd3a4eb3487dd40bf64b9a71a70af3)
1 file changed