powered num may be infinite in float-string conversion

ac936fc2 · Yukihiro "Matz" Matsumoto · 6b6c590f · ac936fc2
Commit ac936fc2 authored Feb 22, 2014 by Yukihiro "Matz" Matsumoto
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src/numeric.c src/numeric.c +8 -0

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--- a/src/numeric.c
+++ b/src/numeric.c
@@ -148,6 +148,14 @@ mrb_flo_to_str(mrb_state *mrb, mrb_value flo)
      /* exponent representation */
      e = TRUE;
      n = n / pow(10.0, exp);
+      if (isinf(n)) {
+        if (s[0] == '-') {
+          return mrb_str_new_lit(mrb, "-0.0");
+        }
+        else {
+          return mrb_str_new_lit(mrb, "0.0");
+        }
+      }
    }
    else {
      /* un-exponent (normal) representation */