1 files changed, 4 insertions, 0 deletions
diff --git a/src/numeric.c b/src/numeric.c
index 101b338de..5dbf9df22 100644
--- a/src/numeric.c
+++ b/src/numeric.c
@@ -484,6 +484,10 @@ flo_shift(mrb_state *mrb, mrb_value x, mrb_int width)
   if (width < 0) {
     while (width++) {
       val /= 2;
+      if (val < 1.0) {
+        val = 0;
+        break;
+      }
     }
 #if defined(_ISOC99_SOURCE)
     val = trunc(val);