diff options
Diffstat (limited to 'Src/signals.c')
| -rw-r--r-- | Src/signals.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Src/signals.c b/Src/signals.c index 7ff4fca9d..d664f80c3 100644 --- a/Src/signals.c +++ b/Src/signals.c @@ -41,6 +41,11 @@ mod_export int sigtrapped[VSIGCOUNT]; /**/ mod_export Eprog sigfuncs[VSIGCOUNT]; +/* Total count of trapped signals */ + +/**/ +mod_export int nsigtrapped; + /* Variables used by signal queueing */ /**/ @@ -716,6 +721,7 @@ settrap(int sig, Eprog l) sig != SIGCHLD) signal_ignore(sig); } else { + nsigtrapped++; sigtrapped[sig] = ZSIG_TRAPPED; if (sig && sig <= SIGCOUNT && #ifdef SIGWINCH @@ -773,6 +779,8 @@ removetrap(int sig) unqueue_signals(); return NULL; } + if (sigtrapped[sig] & ZSIG_TRAPPED) + nsigtrapped--; sigtrapped[sig] = 0; if (sig == SIGINT && interact) { /* PWS 1995/05/16: added test for interactive, also noholdintr() * @@ -860,6 +868,8 @@ endtrapscope(void) exitfn = sigfuncs[SIGEXIT]; } sigfuncs[SIGEXIT] = NULL; + if (sigtrapped[SIGEXIT] & ZSIG_TRAPPED) + nsigtrapped--; sigtrapped[SIGEXIT] = 0; } @@ -878,6 +888,12 @@ endtrapscope(void) dontsavetrap++; settrap(sig, prog); dontsavetrap--; + /* + * counting of nsigtrapped should presumably be handled + * in settrap... + */ + DPUTS((sigtrapped[sig] ^ st->flags) & ZSIG_TRAPPED, + "BUG: settrap didn't restore correct ZSIG_TRAPPED"); if ((sigtrapped[sig] = st->flags) & ZSIG_FUNC) shfunctab->addnode(shfunctab, ((Shfunc)st->list)->nam, (Shfunc) st->list); |