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diff -up ksh-20130214/src/cmd/ksh93/sh/jobs.c.fixkill ksh-20130214/src/cmd/ksh93/sh/jobs.c
--- ksh-20130214/src/cmd/ksh93/sh/jobs.c.fixkill 2012-09-26 17:43:04.000000000 +0200
+++ ksh-20130214/src/cmd/ksh93/sh/jobs.c 2013-02-22 16:38:05.080161740 +0100
@@ -1104,6 +1104,8 @@ static struct process *job_bystring(regi
int job_kill(register struct process *pw,register int sig)
{
+ if(pw==0)
+ goto error;
Shell_t *shp = pw->p_shp;
register pid_t pid;
register int r;
@@ -1127,8 +1129,6 @@ int job_kill(register struct process *pw
#endif /* SIGTSTP */
job_lock();
errno = ECHILD;
- if(pw==0)
- goto error;
pid = pw->p_pid;
#if SHOPT_COSHELL
if(pw->p_cojob)
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