Author: ache
Date: Sat Sep 3 23:04:56 2016
New Revision: 305365
URL: https://svnweb.freebsd.org/changeset/base/305365
Log:
The bug:
$ echo x | awk '/[[:cntrl:]]/'
x
The NUL character in cntrl class truncates the pattern, and an empty
pattern matches anything. The patch skips NUL as a quick fix.
PR: 195792
Submitted by: kdrak...@zoho.com
Approved by: b...@cs.princeton.edu (the author)
MFC after: 3 days
Modified:
head/contrib/one-true-awk/b.c
Modified: head/contrib/one-true-awk/b.c
==============================================================================
--- head/contrib/one-true-awk/b.c Sat Sep 3 21:41:29 2016
(r305364)
+++ head/contrib/one-true-awk/b.c Sat Sep 3 23:04:56 2016
(r305365)
@@ -841,7 +841,7 @@ int relex(void) /* lexical analyzer for
if (cc->cc_name != NULL && prestr[1 +
cc->cc_namelen] == ':' &&
prestr[2 + cc->cc_namelen] == ']') {
prestr += cc->cc_namelen + 3;
- for (i = 0; i < NCHARS; i++) {
+ for (i = 1; i < NCHARS; i++) {
if (!adjbuf((char **) &buf,
&bufsz, bp-buf+1, 100, (char **) &bp, "relex2"))
FATAL("out of space for reg
expr %.10s...", lastre);
if (cc->cc_func(i)) {
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