BASH PATCH REPORT ================= Bash-Release: 4.3 Patch-ID: bash43-032 Bug-Reported-by: crispusfairbairn@gmail.com Bug-Reference-ID: Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-09/msg00013.html Bug-Description: When bash is running in Posix mode, it allows signals -- including SIGCHLD -- to interrupt the `wait' builtin, as Posix requires. However, the interrupt causes bash to not run a SIGCHLD trap for all exited children. This patch fixes the issue and restores the documented behavior in Posix mode. Patch (apply with `patch -p0'): --- a/jobs.c +++ b/jobs.c @@ -3339,7 +3339,9 @@ itrace("waitchld: waitpid returns %d blo if (posixly_correct && this_shell_builtin && this_shell_builtin == wait_builtin) { interrupt_immediately = 0; - trap_handler (SIGCHLD); /* set pending_traps[SIGCHLD] */ + /* This was trap_handler (SIGCHLD) but that can lose traps if + children_exited > 1 */ + queue_sigchld_trap (children_exited); wait_signal_received = SIGCHLD; /* If we're in a signal handler, let CHECK_WAIT_INTR pick it up; run_pending_traps will call run_sigchld_trap later */ --- a/patchlevel.h +++ b/patchlevel.h @@ -25,6 +25,6 @@ regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh looks for to find the patch level (for the sccs version string). */ -#define PATCHLEVEL 31 +#define PATCHLEVEL 32 #endif /* _PATCHLEVEL_H_ */