From: Victor Westerhuis Date: Sun, 15 Jan 2023 00:21:34 +0100 Subject: Add fallback for missing SA_NOCLDWAIT GNU Hurd does not implement SA_NOCLDWAIT. It also does not automatically reap zombies if SIGCHLD is ignored. This fallback does not check for failures from waitpid(2), because there is not much the program can do about them. --- platform/gl/gl-main.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) --- a/platform/gl/gl-main.c +++ b/platform/gl/gl-main.c @@ -3083,6 +3083,11 @@ { if (signal == SIGHUP) reloadrequested = 1; +#ifndef SA_NOCLDWAIT + else if (signal == SIGCHLD) + while (waitpid(-1, NULL, WNOHANG) > 0) + ; +#endif } #endif @@ -3100,11 +3105,18 @@ #ifndef _WIN32 /* Never wait for termination of child processes. */ +#ifdef SA_NOCLDWAIT struct sigaction arg = { .sa_handler=SIG_IGN, .sa_flags=SA_NOCLDWAIT }; sigaction(SIGCHLD, &arg, NULL); +#else + struct sigaction arg = { + .sa_handler=signal_handler + }; + sigaction(SIGCHLD, &arg, NULL); +#endif signal(SIGHUP, signal_handler); #endif