zero check before overflow check devision; close #446

7d167327 · Yukihiro Matsumoto · dabe3ca0 · 7d167327
Commit 7d167327 authored Sep 03, 2012 by Yukihiro Matsumoto
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src/vm.c src/vm.c +1 -1

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--- a/src/vm.c
+++ b/src/vm.c
@@ -1360,7 +1360,7 @@ mrb_run(mrb_state *mrb, struct RProc *proc, mrb_value self)
 	  x = mrb_fixnum(regs[a]);
 	  y = mrb_fixnum(regs[a+1]);
 	  z = x * y;
-	  if (z/x != y) {
+	  if (x != 0 && z/x != y) {
 	    regs[a] = mrb_float_value((mrb_float)x * (mrb_float)y);
 	  }
 	  else {