JehanneOS/mksh
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defer setting exstat for eval to 0 (the one used in case shell() is empty)

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until after the stuff run in shell() has had a chance to toy with $?

bug forwarded by one of our packagers, found by one of their users
This commit is contained in:
tg
2012-10-21 21:55:05 +00:00
parent 31f24a4040
commit c7419d9e6a
3 changed files with 25 additions and 8 deletions
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11
funcs.c
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@ -38,7 +38,7 @@
#endif
#endif
__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.227 2012/10/21 21:39:02 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.228 2012/10/21 21:55:03 tg Exp $");
#if HAVE_KILLPG
/*
@ -2210,8 +2210,10 @@ c_eval(const char **wp)
* If there are no arguments, or only null arguments,
* eval shall return a zero exit status; ...
*/
/* exstat = subst_exstat; */ /* AT&T ksh88 */
exstat = 0; /* SUSv4 */
/* AT&T ksh88: use subst_exstat */
/* exstat = subst_exstat; */
/* SUSv4: OR with a high value never written otherwise */
exstat |= 0x4000;
savef = Flag(FERREXIT);
Flag(FERREXIT) = 0;
@ -2219,6 +2221,9 @@ c_eval(const char **wp)
Flag(FERREXIT) = savef;
source = saves;
afree(s, ATEMP);
if (exstat & 0x4000)
/* detect old exstat, use 0 in that case */
rv = 0;
return (rv);
}