--- src/argp/argp-fmtstream.h.orig	2013-03-09 01:49:46.000000000 -0600
+++ src/argp/argp-fmtstream.h	2018-11-02 02:18:39.000000000 -0500
@@ -200,7 +200,7 @@
 extern int _argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
 extern int __argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
 
-#ifdef __OPTIMIZE__
+#if defined(__OPTIMIZE__) && !defined(__clang__)
 /* Inline versions of above routines.  */
 
 #if !_LIBC