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[PATCH] <sys/cdefs.h>: Inhibit macro expansion for __glibc_has_include
- From: Florian Weimer <fweimer at redhat dot com>
- To: libc-alpha at sourceware dot org
- Date: Wed, 12 Jun 2019 18:01:04 +0200
- Subject: [PATCH] <sys/cdefs.h>: Inhibit macro expansion for __glibc_has_include
This is currently ineffective with GCC because of GC PR 80005, but
it makes sense to anticipate a fix for this defect.
Suggested by Zack Weinberg.
2019-06-12 Florian Weimer <fweimer@redhat.com>
* misc/sys/cdefs.h (__glibc_has_include): Do not use a
function-like macro, so that __has_include can inhibit expansion
of its argument.
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 638872b87b..ed146ce20b 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -413,7 +413,7 @@
#endif
#ifdef __has_include
-# define __glibc_has_include(header) __has_include (header)
+# define __glibc_has_include __has_include
#else
# define __glibc_has_include(header) 0
#endif