https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90038

--- Comment #2 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Author: jb
Date: Fri May 17 18:18:04 2019
New Revision: 271340

URL: https://gcc.gnu.org/viewcvs?rev=271340&root=gcc&view=rev
Log:
libfortran/90038: Use posix_spawn instead of fork

fork() semantics can be problematic.  Most unix style OS'es have
posix_spawn which can be used to replace fork + exec in many cases.
For more information see
e.g.
https://www.microsoft.com/en-us/research/uploads/prod/2019/04/fork-hotos19.pdf

This replaces the one use of fork in libgfortran with posix_spawn.

2019-05-17  Janne Blomqvist  <j...@gcc.gnu.org>

        PR libfortran/90038
        * configure.ac (AC_CHECK_FUNCS_ONCE): Check for posix_spawn.
        * intrinsics/execute_command_line (execute_command_line): Use
        posix_spawn.
        * Makefile.in: Regenerated.
        * config.h.in: Regenerated.
        * configure: Regenerated.

Regtested on x86_64-pc-linux-gnu.

Modified:
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/Makefile.in
    trunk/libgfortran/config.h.in
    trunk/libgfortran/configure
    trunk/libgfortran/configure.ac
    trunk/libgfortran/intrinsics/execute_command_line.c

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