diff options
Diffstat (limited to 'Src/exec.c')
| -rw-r--r-- | Src/exec.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/Src/exec.c b/Src/exec.c index 0f7c84a9f..b2224cfb3 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -404,7 +404,17 @@ execcursh(Estate state, int do_exec) /* Skip word only used for try/always */ state->pc++; - if (!list_pipe && thisjob != list_pipe_job && !hasprocs(thisjob)) + /* + * The test thisjob != -1 was added because sometimes thisjob + * can be invalid at this point. The case in question was + * in a precmd function after operations involving background + * jobs. + * + * This is because sometimes we bypass job control to execute + * very simple functions via execssimple(). + */ + if (!list_pipe && thisjob != -1 && thisjob != list_pipe_job && + !hasprocs(thisjob)) deletejob(jobtab + thisjob, 0); cmdpush(CS_CURSH); execlist(state, 1, do_exec); @@ -1064,7 +1074,7 @@ static int execsimple(Estate state) { wordcode code = *state->pc++; - int lv; + int lv, otj; if (errflag) return (lastval = 1); @@ -1075,6 +1085,13 @@ execsimple(Estate state) code = wc_code(*state->pc++); + /* + * Because we're bypassing job control, ensure the called + * code doesn't see the current job. + */ + otj = thisjob; + thisjob = -1; + if (code == WC_ASSIGN) { cmdoutval = 0; addvars(state, state->pc - 1, 0); @@ -1086,6 +1103,8 @@ execsimple(Estate state) } else lv = (execfuncs[code - WC_CURSH])(state, 0); + thisjob = otj; + return lastval = lv; } @@ -4313,7 +4332,9 @@ execshfunc(Shfunc shf, LinkList args) if (errflag) return; - if (!list_pipe && thisjob != list_pipe_job && !hasprocs(thisjob)) { + /* thisjob may be invalid if we're called via execsimple: see execcursh */ + if (!list_pipe && thisjob != -1 && thisjob != list_pipe_job && + !hasprocs(thisjob)) { /* Without this deletejob the process table * * would be filled by a recursive function. */ last_file_list = jobtab[thisjob].filelist; |