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[committed] libstdc++: Fix test that fails due to name clash with old glibc [PR107979]

Message ID 20221206214100.239663-1-jwakely@redhat.com
State New
Headers show
Series [committed] libstdc++: Fix test that fails due to name clash with old glibc [PR107979] | expand

Commit Message

Jonathan Wakely Dec. 6, 2022, 9:41 p.m. UTC 
Tested x86_64-linux. Pushed to trunk.

-- >8 --

This test was recently modified to check that the library doesn't use
__unused anywhere, because that's a macro in newlib. But it's also a
macro in old versions of glibc, so the test now fails for those targets.
Disable that check for those targets as well as for newlib.

libstdc++-v3/ChangeLog:

	PR libstdc++/107979
	* testsuite/17_intro/names.cc: Do not check __unused on old
	Glibc versions.
---
 libstdc++-v3/testsuite/17_intro/names.cc | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index ffbb199797b..963f74c11f3 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -241,6 +241,13 @@ 
 #undef y
 #endif
 
+#ifdef __GLIBC_PREREQ
+#if ! __GLIBC_PREREQ(2, 19)
+// Glibc defines this prior to 2.19
+#undef __unused
+#endif
+#endif
+
 #if __has_include(<newlib.h>)
 // newlib's <sys/cdefs.h> defines these as macros.
 #undef __lockable