1 files changed, 4 insertions, 0 deletions
diff --git a/numeric.c b/numeric.c
index a937868ce4..f6f1d3b22b 100644
--- a/numeric.c
+++ b/numeric.c
@@ -2042,6 +2042,10 @@ fix_mul(x, y)
     VALUE x, y;
 {
     if (FIXNUM_P(y)) {
+#ifdef __HP_cc
+        /* avoids an optimization bug of HP aC++/ANSI C B3910B A.06.05 [Jul 25 2005] */
+        volatile
+#endif
 	long a, b, c;
 	VALUE r;