Waiting processs in if_xxx got error with calling system().

[mattn]

Hi.

When start process and wait it using if_perl/if_python/if_ruby or etc, calling system() occur error.

For example: https://gist.github.com/2290573

See wait4pid() in os_unix.c:3729

wait4pid() is waiting child process with using 'wait(2)'. The 'wait(2)' don't be specified child process ID. So if another child process exit, SIGCHLD is occured. To avoid this error, it should used 'waitpid(2)'. Below is a patch.

https://gist.github.com/2412399

Please check and include.

[Bram Moolenaar]

Yasuhiro Matsumoto wrote:

Thanks, I'll check it out later.

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