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Fix bug #13084 with crashes during search.

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src/search.c (search_buffer): Check the inverse translations of each
 character in pattern when the buffer being searched is unibyte.
This commit is contained in:
Eli Zaretskii 2012-12-11 17:30:45 +02:00
parent 2c43a9adb2
commit e8c6e965f3
2 changed files with 21 additions and 1 deletions
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6
src/ChangeLog
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@ -1,3 +1,9 @@
2012-12-11 Eli Zaretskii <eliz@gnu.org>
* search.c (search_buffer): Check the inverse translations of each
character in pattern when the buffer being searched is unibyte.
(Bug#13084)
2012-12-10 Paul Eggert <eggert@cs.ucla.edu>
* fileio.c (Fvisited_file_modtime): Return (-1 ...) for nonexistent

16
src/search.c
View file

@ -1406,7 +1406,7 @@ search_buffer (Lisp_Object string, ptrdiff_t pos, ptrdiff_t pos_byte,
char_base = 0;
while (--len >= 0)
{
int c, translated;
int c, translated, inverse;
/* If we got here and the RE flag is set, it's because we're
dealing with a regexp known to be trivial, so the backslash
@ -1420,6 +1420,20 @@ search_buffer (Lisp_Object string, ptrdiff_t pos, ptrdiff_t pos_byte,
c = *base_pat++;
TRANSLATE (translated, trt, c);
*pat++ = translated;
/* Check that none of C's equivalents violates the
assumptions of boyer_moore. */
TRANSLATE (inverse, inverse_trt, c);
while (1)
{
if (inverse >= 0200)
{
boyer_moore_ok = 0;
break;
}
if (c == inverse)
break;
TRANSLATE (inverse, inverse_trt, inverse);
}
}
}