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3825. [bug] Address sign extension bug in isc_regex_validate.

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[RT #35758]

(cherry picked from commit c11e46110b)
This commit is contained in:
Mark Andrews 2014-04-29 14:33:21 +10:00
parent 6318f03621
commit 97e241a3f8
2 changed files with 6 additions and 3 deletions
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3
CHANGES
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@ -1,3 +1,6 @@
3825. [bug] Address sign extension bug in isc_regex_validate.
[RT #35758]
3824. [bug] A collision between two flag values could cause
problems with cache cleaning when SIT was enabled.
[RT #35858]

6
lib/isc/regex.c
View file

@ -220,7 +220,7 @@ isc_regex_validate(const char *c) {
++c;
switch (*c) {
case '.': /* collating element */
if (range) --range;
if (range != 0) --range;
++c;
state = parse_ce;
seen_ce = ISC_FALSE;
@ -255,11 +255,11 @@ isc_regex_validate(const char *c) {
default:
inside:
seen_char = ISC_TRUE;
if (range == 2 && *c < range_start)
if (range == 2 && (*c & 0xff) < range_start)
FAIL("out of order range");
if (range != 0)
--range;
range_start = *c;
range_start = *c & 0xff;
++c;
break;
};