From de3e931df7abdc3ee22dbb7543e86af6d00ee899 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@ruby-lang.org>
Date: Wed, 24 Jun 2020 16:23:59 +0900
Subject: add UNREACHABLE_RETURN

Not every compilers understand that rb_raise does not return.  When a
function does not end with a return statement, such compilers can issue
warnings.  We would better tell them about reachabilities.
---
 error.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'error.c')

diff --git a/error.c b/error.c
index 5cb808fb44..ce936ac568 100644
--- a/error.c
+++ b/error.c
@@ -930,6 +930,7 @@ rb_check_typeddata(VALUE obj, const rb_data_type_t *data_type)
     const char *expected = data_type->wrap_struct_name;
     rb_raise(rb_eTypeError, "wrong argument type %"PRIsVALUE" (expected %s)",
              actual, expected);
+    UNREACHABLE_RETURN(NULL);
 }
 
 /* exception classes */
-- 
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