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-rw-r--r--ext/bigdecimal/bigdecimal.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index f33dd82..31479d4 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2494,7 +2494,9 @@ BigDecimal_initialize_copy(VALUE self, VALUE other)
Real *pv = rb_check_typeddata(self, &BigDecimal_data_type);
Real *x = rb_check_typeddata(other, &BigDecimal_data_type);
- DATA_PTR(self) = VpCopy(pv, x);
+ if (self != other) {
+ DATA_PTR(self) = VpCopy(pv, x);
+ }
return self;
}