mirrors/neovim
1
0
Fork 0
mirror of https://github.com/neovim/neovim.git synced 2025-10-17 07:16:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

vim-patch:8.0.1468: illegal memory access in del_bytes()

Browse Source 
Problem:    Illegal memory access in del_bytes().
Solution:   Check for negative byte count. (Christian Brabandt, closes vim/vim#2466)
191f18bad0
This commit is contained in:
Jan Edmund Lazo
2018-08-24 22:29:59 -04:00
parent bdffa01b52
commit 16b55d2e9d
3 changed files with 14 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
src/nvim/misc1.c
View File

@@ -1605,11 +1605,19 @@ int del_bytes(colnr_T count, bool fixpos_arg, bool use_delcombine)
char_u *oldp = ml_get(lnum);
colnr_T oldlen = (colnr_T)STRLEN(oldp);
/*
* Can't do anything when the cursor is on the NUL after the line.
*/
if (col >= oldlen)
// Can't do anything when the cursor is on the NUL after the line.
if (col >= oldlen) {
return FAIL;
}
// If "count" is zero there is nothing to do.
if (count == 0) {
return OK;
}
// If "count" is negative the caller must be doing something wrong.
if (count < 1) {
IEMSGN("E950: Invalid count for del_bytes(): %ld", count);
return FAIL;
}
/* If 'delcombine' is set and deleting (less than) one character, only
* delete the last combining character. */