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patch 7.4.2223

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Problem:    Buffer overflow when using latin1 character with feedkeys().
Solution:   Check for an illegal character.  Add a test.
This commit is contained in:
Bram Moolenaar
2016-08-17 21:32:09 +02:00
parent 6bff02eb53
commit d3c907b5d2
11 changed files with 67 additions and 48 deletions
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3
src/macros.h
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@@ -274,7 +274,7 @@
/* Backup multi-byte pointer. Only use with "p" > "s" ! */
# define mb_ptr_back(s, p) p -= has_mbyte ? ((*mb_head_off)(s, p - 1) + 1) : 1
/* get length of multi-byte char, not including composing chars */
# define mb_cptr2len(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
# define MB_CPTR2LEN(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
# define MB_COPY_CHAR(f, t) if (has_mbyte) mb_copy_char(&f, &t); else *t++ = *f++
# define MB_CHARLEN(p) (has_mbyte ? mb_charlen(p) : (int)STRLEN(p))
@@ -282,6 +282,7 @@
# define PTR2CHAR(p) (has_mbyte ? mb_ptr2char(p) : (int)*(p))
#else
# define MB_PTR2LEN(p) 1
# define MB_CPTR2LEN(p) 1
# define mb_ptr_adv(p) ++p
# define mb_cptr_adv(p) ++p
# define mb_ptr_back(s, p) --p