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-rw-r--r--tests/color-icc-output-test.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/color-icc-output-test.c b/tests/color-icc-output-test.c
index 0eac2dd4..62103c4b 100644
--- a/tests/color-icc-output-test.c
+++ b/tests/color-icc-output-test.c
@@ -239,6 +239,8 @@ create_cLUT_from_matrix(cmsContext context_id, const struct lcmsMAT3 *mat, int d
{
cmsStage *cLUT_stage;
+ assert(dim_size);
+
cLUT_stage = cmsStageAllocCLutFloat(context_id, dim_size, 3, 3, NULL);
cmsStageSampleCLutFloat(cLUT_stage, sampler_matrix, (void *)mat, 0);