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42601: tidy up code for set -A/+A to not increment a NULL pointer and to be more efficient

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This commit is contained in:
Oliver Kiddle 2018-04-07 18:48:00 +02:00
parent 31f7220563
commit d8753f47bb
2 changed files with 7 additions and 6 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2018-04-07 Oliver Kiddle <okiddle@yahoo.co.uk>
* 42601: Src/builtin.c: tidy up code for set -A/+A to not
increment a NULL pointer and to be more efficient
* 42607, CVE-2018-1100: Src/utils.c: check bounds on buffer
in mail checking

10
Src/builtin.c
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@ -695,13 +695,11 @@ bin_set(char *nam, char **args, UNUSED(Options ops), UNUSED(int func))
char **a = NULL, **y;
int len = arrlen(args);
if (array < 0 && (a = getaparam(arrayname))) {
int al = arrlen(a);
if (al > len)
len = al;
if (array < 0 && (a = getaparam(arrayname)) && arrlen_gt(a, len)) {
a += len;
len += arrlen(a);
}
for (x = y = zalloc((len + 1) * sizeof(char *)); len--; a++) {
for (x = y = zalloc((len + 1) * sizeof(char *)); len--;) {
if (!*args)
args = a;
*y++ = ztrdup(*args++);