[PATCH 00/10] Update tests for GCC 4.9.3 and 5.4.1

[H.J. Lu]

On Sat, Dec 14, 2024, 8:55 PM Sam James <sam@gentoo.org> wrote:

> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
> > Workaround the following GCC 4.9.3 and 5.4.1 issues in glibc tests:
> >
> > 1. GCC 4.9 error with
> >
> > #if expression is true
> > #elif expression with undefined macro
> >
> > 2. elf/ifuncmain9.c fails at run-time when compiled with GCC 5.
> > 3. GCC 4.9 constexpr problem.
> > 4. __builtin_add_overflow and __builtin_mul_overflow are unavailable.
> > 5. Missing braces around initializer errors.
> > 6. ATOMIC_INT_LOCK_FREE isn't a CPP constant.
> > 7. Unsupported -Wmemset-transposed-args.
> > 8. Can't fold "copysign (0, -1)".
> >
> > Tested with GCC 4.9.3 and GCC 5.4.1.
> >
> > H.J. Lu (10):
> >   include/bits/sigstksz.h: Avoid #elif IS_IN (libsupport)
> >   regex.h: Avoid #elif __STDC_VERSION__
> >   ifuncmain9.c: Return EXIT_UNSUPPORTED for GCC 5 or older
> >   tst-assert-c++.cc: Return EXIT_UNSUPPORTED for GCC 4.9 or older
> >   Return EXIT_UNSUPPORTED if __builtin_add_overflow unavailable
> >   Add braces in initializers for GCC 4.9 or older
> >   Return EXIT_UNSUPPORTED if __builtin_mul_overflow unavailable
> >   tst-minsigstksz-1.c: Return EXIT_UNSUPPORTED for GCC 4.9 or older
> >   tester.c: Use -Wmemset-transposed-args for GCC 5 or newer
> >   Don't use copysign in initializer
> >
> >  assert/tst-assert-c++.cc                       | 10 ++++++++++
> >  elf/ifuncmain9.c                               |  9 +++++++--
> >  elf/tst-stringtable.c                          | 10 ++++++++++
> >  include/bits/sigstksz.h                        |  6 ++++--
> >  io/tst-utimensat-skeleton.c                    |  5 +++++
> >  misc/tst-fd_to_filename.c                      | 10 ++++++++++
> >  misc/tst-preadvwritev2-common.c                |  2 +-
> >  nss/getaddrinfo.c                              |  2 +-
> >  posix/regex.h                                  | 18 +++++++++++-------
> >  posix/tst-spawn7.c                             |  4 ++--
> >  rt/tst-timer-sigmask.c                         |  4 ++--
> >  signal/tst-minsigstksz-1.c                     |  2 +-
> >  .../tst-printf-format-skeleton-double.c        | 10 ++++++++--
> >  .../tst-printf-format-skeleton-ldouble.c       | 10 ++++++++--
> >  stdlib/tst-system.c                            |  2 +-
> >  string/tester.c                                |  2 ++
> >  sysdeps/pthread/tst-cancel28.c                 |  4 ++--
> >  sysdeps/unix/sysv/linux/tst-getcwd-smallbuff.c |  4 ++--
> >  sysdeps/unix/sysv/linux/tst-getdents64.c       |  7 +++++++
> >  .../sysv/linux/tst-socket-timestamp-compat.c   |  4 ++--
> >  time/tst-ctime.c                               |  5 +++++
> >  time/tst-difftime.c                            |  7 ++++++-
> >  time/tst-itimer.c                              | 13 ++++++++-----
> >  time/tst-mktime4.c                             |  8 +++++++-
> >  24 files changed, 122 insertions(+), 36 deletions(-)
>
> If you have time, could you look at Clang next? If not, I'll put it on
> my list. Thanks.
>

I will try clang 19 on Fedora 41.


>
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