[PATCH] libstdc++: Test 17_intro/names.cc with -D_FORTIFY_SOURCE=2 [PR116210]

[Jakub Jelinek]

On Fri, Oct 04, 2024 at 12:52:11PM +0100, Jonathan Wakely wrote:
> This doesn't really belong in our testsuite, because the sole purpose of
> the new test is to find bugs in the Glibc wrappers (like the one linked
> below). But maybe it's a kindness to do it in our testsuite, because we
> already have this test in place, and one Glibc bug was already found
> thanks to Sam running the existing test with _FORTIFY_SOURCE defined.
> 
> Should we do this?

I think so.  While those bugs are glibc bugs, libstdc++ uses libc headers
and so if they have namespace cleanness issues, so does libstdc++.

> Add a new testcase that repeats 17_intro/names.cc but with
> _FORTIFY_SOURCE defined, to find problems in Glibc fortify wrappers like
> https://sourceware.org/bugzilla/show_bug.cgi?id=32052 (which is fixed
> now).
> 
> libstdc++-v3/ChangeLog:
> 
> 	PR libstdc++/116210
> 	* testsuite/17_intro/names.cc (sz): Undef for versions of Glibc
> 	that use it in the fortify wrappers.
> 	* testsuite/17_intro/names_fortify.cc: New test.

	Jakub