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slackware-current/source/a/bash/bash-4.2-patches/bash42-003
Patrick J Volkerding 9664bee729 Slackware 14.0
Wed Sep 26 01:10:42 UTC 2012
Slackware 14.0 x86_64 stable is released!

We're perfectionists here at Slackware, so this release has been a long
time a-brewing.  But we think you'll agree that it was worth the wait.
Slackware 14.0 combines modern components, ease of use, and flexible
configuration... our "KISS" philosophy demands it.

The ISOs are off to be replicated, a 6 CD-ROM 32-bit set and a
dual-sided
32-bit/64-bit x86/x86_64 DVD.  Please consider supporting the Slackware
project by picking up a copy from store.slackware.com.  We're taking
pre-orders now, and offer a discount if you sign up for a subscription.

Thanks to everyone who helped make this happen.  The Slackware team, the
upstream developers, and (of course) the awesome Slackware user
community.

Have fun!  :-)
2018-05-31 22:51:55 +02:00

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BASH PATCH REPORT
=================
Bash-Release: 4.2
Patch-ID: bash42-003
Bug-Reported-by: Clark J. Wang <dearvoid@gmail.com>
Bug-Reference-ID: <AANLkTikZ_rVV-frR8Fh0PzhXnMKnm5XsUR-F3qtPPs5G@mail.gmail.com>
Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2011-02/msg00136.html
Bug-Description:
When using the pattern replacement and pattern removal word expansions, bash
miscalculates the possible match length in the presence of an unescaped left
bracket without a closing right bracket, resulting in a failure to match
the pattern.
Patch (apply with `patch -p0'):
*** ../bash-4.2-patched/lib/glob/gmisc.c 2011-02-05 16:11:17.000000000 -0500
--- lib/glob/gmisc.c 2011-02-18 23:53:42.000000000 -0500
***************
*** 78,83 ****
size_t wmax;
{
! wchar_t wc, *wbrack;
! int matlen, t, in_cclass, in_collsym, in_equiv;
if (*wpat == 0)
--- 78,83 ----
size_t wmax;
{
! wchar_t wc;
! int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
if (*wpat == 0)
***************
*** 119,123 ****
case L'[':
/* scan for ending `]', skipping over embedded [:...:] */
! wbrack = wpat;
wc = *wpat++;
do
--- 119,123 ----
case L'[':
/* scan for ending `]', skipping over embedded [:...:] */
! bracklen = 1;
wc = *wpat++;
do
***************
*** 125,140 ****
if (wc == 0)
{
! matlen += wpat - wbrack - 1; /* incremented below */
! break;
}
else if (wc == L'\\')
{
! wc = *wpat++;
! if (*wpat == 0)
! break;
}
else if (wc == L'[' && *wpat == L':') /* character class */
{
wpat++;
in_cclass = 1;
}
--- 125,148 ----
if (wc == 0)
{
! wpat--; /* back up to NUL */
! matlen += bracklen;
! goto bad_bracket;
}
else if (wc == L'\\')
{
! /* *wpat == backslash-escaped character */
! bracklen++;
! /* If the backslash or backslash-escape ends the string,
! bail. The ++wpat skips over the backslash escape */
! if (*wpat == 0 || *++wpat == 0)
! {
! matlen += bracklen;
! goto bad_bracket;
! }
}
else if (wc == L'[' && *wpat == L':') /* character class */
{
wpat++;
+ bracklen++;
in_cclass = 1;
}
***************
*** 142,145 ****
--- 150,154 ----
{
wpat++;
+ bracklen++;
in_cclass = 0;
}
***************
*** 147,152 ****
{
wpat++;
if (*wpat == L']') /* right bracket can appear as collating symbol */
! wpat++;
in_collsym = 1;
}
--- 156,165 ----
{
wpat++;
+ bracklen++;
if (*wpat == L']') /* right bracket can appear as collating symbol */
! {
! wpat++;
! bracklen++;
! }
in_collsym = 1;
}
***************
*** 154,157 ****
--- 167,171 ----
{
wpat++;
+ bracklen++;
in_collsym = 0;
}
***************
*** 159,164 ****
{
wpat++;
if (*wpat == L']') /* right bracket can appear as equivalence class */
! wpat++;
in_equiv = 1;
}
--- 173,182 ----
{
wpat++;
+ bracklen++;
if (*wpat == L']') /* right bracket can appear as equivalence class */
! {
! wpat++;
! bracklen++;
! }
in_equiv = 1;
}
***************
*** 166,174 ****
--- 184,196 ----
{
wpat++;
+ bracklen++;
in_equiv = 0;
}
+ else
+ bracklen++;
}
while ((wc = *wpat++) != L']');
matlen++; /* bracket expression can only match one char */
+ bad_bracket:
break;
}
***************
*** 214,219 ****
size_t max;
{
! char c, *brack;
! int matlen, t, in_cclass, in_collsym, in_equiv;
if (*pat == 0)
--- 236,241 ----
size_t max;
{
! char c;
! int matlen, bracklen, t, in_cclass, in_collsym, in_equiv;
if (*pat == 0)
***************
*** 255,259 ****
case '[':
/* scan for ending `]', skipping over embedded [:...:] */
! brack = pat;
c = *pat++;
do
--- 277,281 ----
case '[':
/* scan for ending `]', skipping over embedded [:...:] */
! bracklen = 1;
c = *pat++;
do
***************
*** 261,276 ****
if (c == 0)
{
! matlen += pat - brack - 1; /* incremented below */
! break;
}
else if (c == '\\')
{
! c = *pat++;
! if (*pat == 0)
! break;
}
else if (c == '[' && *pat == ':') /* character class */
{
pat++;
in_cclass = 1;
}
--- 283,306 ----
if (c == 0)
{
! pat--; /* back up to NUL */
! matlen += bracklen;
! goto bad_bracket;
}
else if (c == '\\')
{
! /* *pat == backslash-escaped character */
! bracklen++;
! /* If the backslash or backslash-escape ends the string,
! bail. The ++pat skips over the backslash escape */
! if (*pat == 0 || *++pat == 0)
! {
! matlen += bracklen;
! goto bad_bracket;
! }
}
else if (c == '[' && *pat == ':') /* character class */
{
pat++;
+ bracklen++;
in_cclass = 1;
}
***************
*** 278,281 ****
--- 308,312 ----
{
pat++;
+ bracklen++;
in_cclass = 0;
}
***************
*** 283,288 ****
{
pat++;
if (*pat == ']') /* right bracket can appear as collating symbol */
! pat++;
in_collsym = 1;
}
--- 314,323 ----
{
pat++;
+ bracklen++;
if (*pat == ']') /* right bracket can appear as collating symbol */
! {
! pat++;
! bracklen++;
! }
in_collsym = 1;
}
***************
*** 290,293 ****
--- 325,329 ----
{
pat++;
+ bracklen++;
in_collsym = 0;
}
***************
*** 295,300 ****
{
pat++;
if (*pat == ']') /* right bracket can appear as equivalence class */
! pat++;
in_equiv = 1;
}
--- 331,340 ----
{
pat++;
+ bracklen++;
if (*pat == ']') /* right bracket can appear as equivalence class */
! {
! pat++;
! bracklen++;
! }
in_equiv = 1;
}
***************
*** 302,310 ****
--- 342,354 ----
{
pat++;
+ bracklen++;
in_equiv = 0;
}
+ else
+ bracklen++;
}
while ((c = *pat++) != ']');
matlen++; /* bracket expression can only match one char */
+ bad_bracket:
break;
}
*** ../bash-4.2-patched/patchlevel.h Sat Jun 12 20:14:48 2010
--- patchlevel.h Thu Feb 24 21:41:34 2011
***************
*** 26,30 ****
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 2
#endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
looks for to find the patch level (for the sccs version string). */
! #define PATCHLEVEL 3
#endif /* _PATCHLEVEL_H_ */