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fix potential memory corruption in display_string() when adding UTF-8 

characters, found by valgrind (and caused by a bad merge of part of DB's
code)


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2234 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
This commit is contained in:
David Lawrence Ramsey 2005-01-05 16:59:49 +00:00
parent 28e19f8bbc
commit bbd63e136d
1 changed files with 9 additions and 3 deletions
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12
src/winio.c
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@ -2287,7 +2287,15 @@ char *display_string(const char *buf, size_t start_col, size_t len, bool
assert(column <= start_col); assert(column <= start_col);
alloc_len = display_string_len(buf + start_index, start_col, alloc_len = display_string_len(buf + start_index, start_col,
start_col + len) + 2; start_col + len);
alloc_len +=
#ifdef NANO_WIDE
MB_CUR_MAX
#else
1
#endif
* 2;
converted = charalloc(alloc_len + 1); converted = charalloc(alloc_len + 1);
index = 0; index = 0;
@ -2464,8 +2472,6 @@ char *display_string(const char *buf, size_t start_col, size_t len, bool
} }
/* Make sure that converted is at most len columns wide. */ /* Make sure that converted is at most len columns wide. */
converted[index] = '\0';
index = actual_x(converted, len);
null_at(&converted, index); null_at(&converted, index);
return converted; return converted;