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-rw-r--r--ext/readline/readline.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 77acfdf517..e550782c5d 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -1379,7 +1379,8 @@ rb_remove_history(int index)
return Qnil;
#else
rb_notimplement();
- return Qnil; /* not reached */
+
+ UNREACHABLE;
#endif
}