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21814: error handling for traps in "always" constructs.

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This commit is contained in:
Bart Schaefer 2005-12-15 04:24:04 +00:00
parent c3e8aec759
commit 174ad4a80f
3 changed files with 25 additions and 3 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2005-12-14 Bart Schaefer <schaefer@zsh.org>
* 21814: Src/loop.c, Src/signals.c: if an error occurs in an
inline trap, set $? to 1, to match the behavior of pre-4.2
versions of zsh. If and only if the trap is executed within the
"try" part of an "always" construct, also propagate the error
condition so that the "try" section is aborted. (Belated commit.)
2005-12-14 Wayne Davison <wayned@users.sourceforge.net> 2005-12-14 Wayne Davison <wayned@users.sourceforge.net>
* 22078: Src/utils.c: made ucs4toutf8() a static function (when * 22078: Src/utils.c: made ucs4toutf8() a static function (when

11
Src/loop.c
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@ -626,6 +626,10 @@ execcase(Estate state, int do_exec)
zlong zlong
try_errflag = -1; try_errflag = -1;
/**/
zlong
try_tryflag = 0;
/**/ /**/
int int
exectry(Estate state, int do_exec) exectry(Estate state, int do_exec)
@ -633,7 +637,7 @@ exectry(Estate state, int do_exec)
Wordcode end, always; Wordcode end, always;
int endval; int endval;
int save_retflag, save_breaks, save_loops, save_contflag; int save_retflag, save_breaks, save_loops, save_contflag;
zlong save_try_errflag; zlong save_try_errflag, save_try_tryflag;
end = state->pc + WC_TRY_SKIP(state->pc[-1]); end = state->pc + WC_TRY_SKIP(state->pc[-1]);
always = state->pc + 1 + WC_TRY_SKIP(*state->pc); always = state->pc + 1 + WC_TRY_SKIP(*state->pc);
@ -642,8 +646,13 @@ exectry(Estate state, int do_exec)
cmdpush(CS_CURSH); cmdpush(CS_CURSH);
/* The :try clause */ /* The :try clause */
save_try_tryflag = try_tryflag;
try_tryflag = 1;
execlist(state, 1, do_exec); execlist(state, 1, do_exec);
try_tryflag = save_try_tryflag;
/* Don't record errflag here, may be reset. */ /* Don't record errflag here, may be reset. */
endval = lastval; endval = lastval;

9
Src/signals.c
View file

@ -1003,6 +1003,7 @@ dotrapargs(int sig, int *sigtr, void *sigfn)
int trapret = 0; int trapret = 0;
int obreaks = breaks; int obreaks = breaks;
int isfunc; int isfunc;
int traperr;
/* if signal is being ignored or the trap function * /* if signal is being ignored or the trap function *
* is NULL, then return * * is NULL, then return *
@ -1097,8 +1098,8 @@ dotrapargs(int sig, int *sigtr, void *sigfn)
* execrestore. * execrestore.
*/ */
trapret = trapreturn + 1; trapret = trapreturn + 1;
} else if (errflag) }
trapret = 1; traperr = errflag;
execrestore(); execrestore();
lexrestore(); lexrestore();
@ -1110,6 +1111,10 @@ dotrapargs(int sig, int *sigtr, void *sigfn)
lastval = trapret-1; lastval = trapret-1;
} }
} else { } else {
if (traperr && emulation != EMULATE_SH)
lastval = 1;
if (try_tryflag)
errflag = traperr;
breaks += obreaks; breaks += obreaks;
if (breaks > loops) if (breaks > loops)
breaks = loops; breaks = loops;