[Tarantool-patches] [PATCH] popen: fix 'may be clobbered' compiler warning

[Cyrill Gorcunov]

On Sat, Apr 11, 2020 at 01:28:07AM +0300, Alexander Turenko wrote:
> I guess a compiler assumes that the code inside vfork may use the stack
> slot that corresponds the variable and so clobber it. The recent commit
> 07a07b3cc7b85375d20b3fc6ca1e5060304f337b ('popen: decouple logger fd
> from stderr') adds read from this variable after vfork() in the parent
> process.
> 
> The warning is produced on RelWithDebInfo build with LTO enabled on GCC
> 9.2.0 (locally) and on GCC 8.3.0 (in CI).
> 
> Part of #4031
Acked-by: Cyrill Gorcunov <gorcunov at gmail.com>