public inbox for glibc-bugs-regex@sourceware.org
help / color / mirror / Atom feed
* [Bug regex/26026] New: __wcrtomb called with undefined conversion state
@ 2020-05-23 7:54 mbuilov at gmail dot com
0 siblings, 0 replies; only message in thread
From: mbuilov at gmail dot com @ 2020-05-23 7:54 UTC (permalink / raw)
To: glibc-bugs-regex
https://sourceware.org/bugzilla/show_bug.cgi?id=26026
Bug ID: 26026
Summary: __wcrtomb called with undefined conversion state
Product: glibc
Version: 2.33
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: regex
Assignee: unassigned at sourceware dot org
Reporter: mbuilov at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Hi.
Please consider the following code fragment of ./posix/regcomp.c:
392 /* ... Else catch all bytes which can start the mbchars. */
393 for (i = 0; i < cset->nmbchars; ++i)
394 {
395 char buf[256];
396 mbstate_t state;
397 memset (&state, '\0', sizeof (state));
398 if (__wcrtomb (buf, cset->mbchars[i], &state) !=
(size_t) -1)
399 re_set_fastmap (fastmap, icase, *(unsigned char *)
buf);
here, if __wcrtomb() fails, the variable 'state' becomes "undefined".
400 if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
401 {
402 if (__wcrtomb (buf, __towlower (cset->mbchars[i]),
&state)
403 != (size_t) -1)
and here __wcrtomb() reuses "undefined" 'state'
404 re_set_fastmap (fastmap, false, *(unsigned char *)
buf);
405 }
406 }
--
You are receiving this mail because:
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-05-23 7:54 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-23 7:54 [Bug regex/26026] New: __wcrtomb called with undefined conversion state mbuilov at gmail dot com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).