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<sys/cdefs.h>: Inhibit macro expansion for __glibc_has_include

Message ID 87a7em6ben.fsf@oldenburg2.str.redhat.com
State Superseded
Headers show

Commit Message

Florian Weimer June 12, 2019, 4:01 p.m. UTC
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.
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Patch

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