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-rw-r--r--src/geometry.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/geometry.c b/src/geometry.c
index 270db457..07c49ecc 100644
--- a/src/geometry.c
+++ b/src/geometry.c
@@ -204,6 +204,7 @@ static int check_reflection(struct image *image, double mres, int output,
rhigh = +image->profile_radius;
clamp_high = +1;
}
+ assert(clamp_low <= clamp_high);
/* The six possible combinations of clamp_{low,high} (including
* zero) correspond to the six situations in Table 3 of Rossmann
* et al. (1979). */