https://git.ruby-lang.org/ruby.git/commit/?id=6163a4e1b3

From 6163a4e1b33ed7df27d0c37e835ce04407857a16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E9=83=A8=E6=98=8C=E5=B9=B3?=
 <shyouhei@r...>
Date: Wed, 8 Apr 2020 16:18:59 +0900
Subject: RUBY3_HAS_BUILTIN: fix for nonexistent builtin

Trying to fix icc breakage:
https://rubyci.org/logs/rubyci.s3.amazonaws.com/icc-x64/ruby-master/log/20200408T050004Z.fail.html.gz

It seems the macro had problems when a builtin does not exist for the
target compiler.  Force evaluete to 0 then, by adding 0 to the
expression.

diff --git a/include/ruby/3/has/builtin.h b/include/ruby/3/has/builtin.h
index 51e1875..b095ffd 100644
--- a/include/ruby/3/has/builtin.h
+++ b/include/ruby/3/has/builtin.h
@@ -65,7 +65,7 @@ https://github.com/ruby/ruby/blob/trunk/include/ruby/3/has/builtin.h#L65
 
 #else
 # /* Take config.h definition when available */
-# define RUBY3_HAS_BUILTIN(_) RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)
+# define RUBY3_HAS_BUILTIN(_) (RUBY3_TOKEN_PASTE(RUBY3_HAS_BUILTIN_, _)+0)
 # define RUBY3_HAS_BUILTIN___builtin_add_overflow      HAVE_BUILTIN___BUILTIN_ADD_OVERFLOW
 # define RUBY3_HAS_BUILTIN___builtin_alloca_with_align HAVE_BUILTIN___BUILTIN_ALLOCA_WITH_ALIGN
 # define RUBY3_HAS_BUILTIN___builtin_assume_aligned    HAVE_BUILTIN___BUILTIN_ASSUME_ALIGNED
-- 
cgit v0.10.2


--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/