BASH PATCH REPORT ================= Bash-Release: 4.3 Patch-ID: bash43-022 Bug-Reported-by: scorp.dev.null@gmail.com Bug-Reference-ID: Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2014-06/msg00061.html Bug-Description: Using nested pipelines within loops with the `lastpipe' option set can result in a segmentation fault. Patch (apply with `patch -p0'): --- a/execute_cmd.c +++ b/execute_cmd.c @@ -2409,7 +2409,16 @@ execute_pipeline (command, asynchronous, #endif lstdin = wait_for (lastpid); #if defined (JOB_CONTROL) - exec_result = job_exit_status (lastpipe_jid); + /* If wait_for removes the job from the jobs table, use result of last + command as pipeline's exit status as usual. The jobs list can get + frozen and unfrozen at inconvenient times if there are multiple pipelines + running simultaneously. */ + if (INVALID_JOB (lastpipe_jid) == 0) + exec_result = job_exit_status (lastpipe_jid); + else if (pipefail_opt) + exec_result = exec_result | lstdin; /* XXX */ + /* otherwise we use exec_result */ + #endif unfreeze_jobs_list (); } --- 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 21 +#define PATCHLEVEL 22 #endif /* _PATCHLEVEL_H_ */