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Fix core dump in char-equal.

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* editfns.c (Fchar_equal): Do not use MAKE_CHAR_MULTIBYTE in
unibyte buffers, as we can't tell whether the characters are
actually unibyte.

Fixes: debbugs:17011
This commit is contained in:
Paul Eggert 2014-03-25 22:35:38 -07:00
parent cefcfbcc1b
commit 05b250c2c0
2 changed files with 10 additions and 10 deletions
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5
src/ChangeLog
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@ -1,5 +1,10 @@
2014-03-26 Paul Eggert <eggert@cs.ucla.edu>
Fix core dump in char-equal (Bug#17011).
* editfns.c (Fchar_equal): Do not use MAKE_CHAR_MULTIBYTE in
unibyte buffers, as we can't tell whether the characters are
actually unibyte.
* insdel.c (adjust_markers_for_delete): Remove unused local.
2014-03-24 Barry O'Reilly <gundaetiapo@gmail.com>

15
src/editfns.c
View file

@ -4377,18 +4377,13 @@ Case is ignored if `case-fold-search' is non-nil in the current buffer. */)
if (NILP (BVAR (current_buffer, case_fold_search)))
return Qnil;
/* FIXME: When enable-multibyte-characters is nil, it's still possible
to manipulate multibyte chars, which means there is a bug for chars
in the range 128-255 as we can't tell whether they are eight-bit
bytes or Latin-1 chars. For now, assume the latter. See Bug#17011.
Also see casefiddle.c's casify_object, which has a similar problem. */
i1 = XFASTINT (c1);
if (NILP (BVAR (current_buffer, enable_multibyte_characters))
&& ! ASCII_CHAR_P (i1))
{
MAKE_CHAR_MULTIBYTE (i1);
}
i2 = XFASTINT (c2);
if (NILP (BVAR (current_buffer, enable_multibyte_characters))
&& ! ASCII_CHAR_P (i2))
{
MAKE_CHAR_MULTIBYTE (i2);
}
return (downcase (i1) == downcase (i2) ? Qt : Qnil);
}