[Bug testsuite/113278] analyzer tests relying on fileno() fail on arm-eabi

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113278

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Torbjorn Svensson <azoff@gcc.gnu.org>:

https://gcc.gnu.org/g:8e8c2d2b34971bb29e74341a3efc625f1db06639

commit r14-9015-g8e8c2d2b34971bb29e74341a3efc625f1db06639
Author: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Date:   Thu Feb 15 17:46:24 2024 +0100

    testsuite: Define _POSIX_SOURCE for tests [PR113278]

    As the tests assume that fileno() is visible (only part of POSIX),
    define the guard to ensure that it's visible.  Currently, glibc appears
    to always have this defined in C++, newlib does not.

    Without this patch, fails like this can be seen:

    Testing analyzer/fileno-1.c,  -std=c++98
    .../fileno-1.c: In function 'int test_pass_through(FILE*)':
    .../fileno-1.c:5:10: error: 'fileno' was not declared in this scope
    FAIL: c-c++-common/analyzer/fileno-1.c  -std=c++98 (test for excess errors)

    Patch has been verified on Linux.

    gcc/testsuite/ChangeLog:
            PR testsuite/113278
            * c-c++-common/analyzer/fileno-1.c: Define _POSIX_SOURCE.
            * c-c++-common/analyzer/flex-with-call-summaries.c: Same.
            * c-c++-common/analyzer/flex-without-call-summaries.c: Same.

    Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>