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-rw-r--r--rational.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/rational.c b/rational.c
index aaf1d3a8cc..8bf786a166 100644
--- a/rational.c
+++ b/rational.c
@@ -1501,6 +1501,8 @@ nurat_s_induced_from(VALUE klass, VALUE n)
void
Init_Rational(void)
{
+#undef rb_intern
+
assert(fprintf(stderr, "assert() is now active\n"));
id_Unify = rb_intern("Unify");