[PATCH] libstdc++: testsuite: don't test for __unused

[Xi Ruoyao]

x86_64 glibc has started to use it since the 2.43 release.

Link: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b9579342c68b#patch67
---
 libstdc++-v3/testsuite/17_intro/badnames.cc | 2 +-
 libstdc++-v3/testsuite/17_intro/names.cc    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/testsuite/17_intro/badnames.cc b/libstdc++-v3/testsuite/17_intro/badnames.cc
index ff590fcdf4d..de4d94faf14 100644
--- a/libstdc++-v3/testsuite/17_intro/badnames.cc
+++ b/libstdc++-v3/testsuite/17_intro/badnames.cc
@@ -67,7 +67,7 @@
 
 // BSD adds:
 #define __used		__used is a BADNAME
-#define __unused	__unused is a BADNAME
+        // __unused	(glibc uses this so can't test here)
         // __inline	(glibc uses this so can't test here)
         // _Complex	(glibc uses this so can't test here)
 #define __istype	__istype is a BADNAME
diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index 106acfa641b..2249735baae 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -150,7 +150,7 @@
 # define __lockable		cannot be used as an identifier
 # define __null_sentinel	cannot be used as an identifier
 # define __packed		cannot be used as an identifier
-# define __unused		cannot be used as an identifier
+      // __unused		(glibc uses this so can't test here)
 # define __used			cannot be used as an identifier
 
 #ifndef __APPLE__
-- 
2.52.0