1 files changed, 1 insertions, 0 deletions
diff --git a/location.c b/location.c
index 74b032c..48fd269 100644
--- a/location.c
+++ b/location.c
@@ -1,3 +1,4 @@
 static bool location_after(Location a, Location b) { /* a is after b? */
+	assert(a.ctx == b.ctx);
 	return a.code > b.code;
 }