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Diffstat (limited to 'spec/ruby/optional/capi/ext/encoding_spec.c')
-rw-r--r--spec/ruby/optional/capi/ext/encoding_spec.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/spec/ruby/optional/capi/ext/encoding_spec.c b/spec/ruby/optional/capi/ext/encoding_spec.c
index 87b97f3a1b..9ab893b86a 100644
--- a/spec/ruby/optional/capi/ext/encoding_spec.c
+++ b/spec/ruby/optional/capi/ext/encoding_spec.c
@@ -94,8 +94,6 @@ static VALUE encoding_spec_rb_default_external_encoding(VALUE self) {
#endif
#ifdef HAVE_RB_ENC_ALIAS
-extern int rb_enc_alias(const char* alias, const char* orig);
-
static VALUE encoding_spec_rb_enc_alias(VALUE self, VALUE alias, VALUE orig) {
return INT2NUM(rb_enc_alias(RSTRING_PTR(alias), RSTRING_PTR(orig)));
}