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intel: add null src pointer check in intel_region_reference()

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Fixes segfault when running cubemap demo on i945.  This happened
when intel_region_reference() was called in i915_set_draw_region()
with depth_region=NULL.

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Brian Paul 2011-07-07 17:29:28 -06:00
parent 7eb7d67d50
commit d8f65c07e9
1 changed files with 2 additions and 1 deletions
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3
src/mesa/drivers/dri/intel/intel_regions.c
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@ -271,7 +271,8 @@ intel_region_reference(struct intel_region **dst, struct intel_region *src)
if (*dst)
intel_region_release(dst);
src->refcount++;
if (src)
src->refcount++;
*dst = src;
}
}