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-rw-r--r--ext/bigdecimal/bigdecimal.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 061ec088ea..776c0ae491 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -605,7 +605,7 @@ BigDecimal_to_f(VALUE self)
GUARD_OBJ(p,GetVpValue(self,1));
if (VpVtoD(&d, &e, p)!=1) return rb_float_new(d);
- if (e > DBL_MAX_10_EXP) goto erange;
+ if (e > DBL_MAX_10_EXP+BASE_FIG) goto erange;
str = rb_str_new(0, VpNumOfChars(p,"E"));
buf = RSTRING_PTR(str);
VpToString(p, buf, 0, 0);