[gcc r13-6280] [libstdc++] [testsuite] intro/names.cc: undef func on vxw7krn

[Alexandre Oliva]

https://gcc.gnu.org/g:937692f20d44e41b340b54cb0e0006f5cabd070c

commit r13-6280-g937692f20d44e41b340b54cb0e0006f5cabd070c
Author: Alexandre Oliva <oliva@adacore.com>
Date:   Wed Feb 22 14:35:13 2023 -0300

    [libstdc++] [testsuite] intro/names.cc: undef func on vxw7krn
    
    The '#define func' added in 2021, to test that system headers don't
    violate the user namespace, exposes such a bug in the vxworks sysLib.h
    header, so add yet another such annotated workaround.
    
    
    for  libstdc++-v3/ChangeLog
    
            * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
            kernel mode.

Diff:
---
 libstdc++-v3/testsuite/17_intro/names.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libstdc++-v3/testsuite/17_intro/names.cc b/libstdc++-v3/testsuite/17_intro/names.cc
index afa749128f5..9932dea14d5 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -346,6 +346,8 @@
 #undef d
 #undef e
 #undef f
+// in sysLib.h, func appears as a formal parameter name
+#undef func
 #endif // __RTP__
 
 #endif // VxWorks Major >= 7