From c8907381b10259bed3a871a2881c0f3b7287ab3c Mon Sep 17 00:00:00 2001
From: John Levon <john.levon@joyent.com>
Date: Thu, 7 May 2020 05:16:27 -0700
Subject: 12705 remove __builtin_alloca() declaration from string.h Reviewed
 by: Toomas Soome <tsoome@me.com> Reviewed by: Andy Stormont
 <astormont@racktopsystems.com> Approved by: Gordon Ross
 <gordon.w.ross@gmail.com>

---
 usr/src/head/string.h | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/usr/src/head/string.h b/usr/src/head/string.h
index 2194b70bd8..f75c14c59c 100644
--- a/usr/src/head/string.h
+++ b/usr/src/head/string.h
@@ -22,6 +22,7 @@
 /*
  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2020 Joyent, Inc.
  */
 
 /*	Copyright (c) 1988 AT&T	*/
@@ -139,13 +140,8 @@ extern char *strdup(const char *);
 
 #if defined(__EXTENSIONS__) || \
 	(!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
-#if defined(__GNUC__)
 
-/*
- * gcc provides this inlining facility but Studio C does not.
- * We should use it exclusively once Studio C also provides it.
- */
-extern void *__builtin_alloca(size_t);
+#if defined(__GNUC__)
 
 #define	strdupa(s)							\
 	(__extension__(							\
-- 
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