# HG changeset patch # User Bruno Haible # Date 1235839283 -3600 # Node ID 6d6cc28a5313d3e20ca024681d47477e490dbcb9 # Parent cf3001cea0968872e3de1b20e0c637d89f217233 Clarify specification of wait_subprocess. diff --git a/ChangeLog b/ChangeLog --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2009-02-28 Bruno Haible + + * lib/wait-process.h (wait_subprocess): Clarify restriction regarding + SIGCHLD. + Reported by Jim Meyering. + 2009-02-28 Bruno Haible * m4/printf.m4 (gl_PRINTF_DIRECTIVE_LS): Separate the two first tests. diff --git a/lib/wait-process.h b/lib/wait-process.h --- a/lib/wait-process.h +++ b/lib/wait-process.h @@ -1,5 +1,5 @@ /* Waiting for a subprocess to finish. - Copyright (C) 2001-2003, 2006, 2008 Free Software Foundation, Inc. + Copyright (C) 2001-2003, 2006, 2008-2009 Free Software Foundation, Inc. Written by Bruno Haible , 2001. This program is free software: you can redistribute it and/or modify @@ -50,7 +50,9 @@ with an error status. - If termsigp is not NULL, *termsig will be set to the signal that terminated the subprocess (if supported by the platform: not on native - Windows platforms), otherwise 0. */ + Windows platforms), otherwise 0. + Prerequisites: The signal handler for SIGCHLD should not be set to SIG_IGN, + otherwise this function will not work. */ extern int wait_subprocess (pid_t child, const char *progname, bool ignore_sigpipe, bool null_stderr, bool slave_process, bool exit_on_error,