[Mesa-dev] [PATCH] st/mesa: add null pointer check in st_texture_image_map()

[Brian Paul]

If we failed to allocate a memory resource for the texture we'd crash
when we tried to map it.  Now we propogate the NULL back up to the
texstore code and generate GL_OUT_OF_MEMORY.

Fixes a crash with the upcoming piglit max-texture-size test.

NOTE: This is a candidate for the 8.0 branch.
---
 src/mesa/state_tracker/st_texture.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mesa/state_tracker/st_texture.c b/src/mesa/state_tracker/st_texture.c
index 132d7a8..9627a61 100644
--- a/src/mesa/state_tracker/st_texture.c
+++ b/src/mesa/state_tracker/st_texture.c
@@ -222,6 +222,9 @@ st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
 
    DBG("%s \n", __FUNCTION__);
 
+   if (!stImage->pt)
+      return NULL;
+
    if (stObj->pt != stImage->pt)
       level = 0;
    else
-- 
1.7.3.4