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-rw-r--r--src/mesa/main/framebuffer.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mesa/main/framebuffer.c b/src/mesa/main/framebuffer.c
index d061d22d9b8..3fe70f449c2 100644
--- a/src/mesa/main/framebuffer.c
+++ b/src/mesa/main/framebuffer.c
@@ -216,6 +216,7 @@ _mesa_free_framebuffer_data(struct gl_framebuffer *fb)
GLuint i;
assert(fb);
+ assert(fb->RefCount == 0);
_glthread_DESTROY_MUTEX(fb->Mutex);