Fix infinite loop in Completion_heads_engraver at invalid measure position (issue...

[lilypond.git] / lily / misc.cc

diff --git a/lily/misc.cc b/lily/misc.cc
index f104f98baa7be06dc611011d5995d97bddb72fb5..2adc250481b978bf75a196955787bd3fbca7d852 100644 (file)
--- a/lily/misc.cc
+++ b/lily/misc.cc
@@ -30,7 +30,8 @@
 int
 intlog2 (int d)
 {
-  assert (d);
+  if (d <= 0)
+    error ("intlog2 with negative argument: " + to_string (d));
   int i = 0;
   while ((d != 1))
     {