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patch 8.2.4214: illegal memory access with large 'tabstop' in Ex mode

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Problem:    Illegal memory access with large 'tabstop' in Ex mode.
Solution:   Allocate enough memory.
This commit is contained in:
Bram Moolenaar
2022-01-25 11:55:02 +00:00
parent 76687d2717
commit 85b6747abc
3 changed files with 13 additions and 1 deletions
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2
src/ex_getln.c
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@@ -1513,7 +1513,7 @@ init_ccline(int firstc, int indent)
ccline.cmdindent = (firstc > 0 ? indent : 0); ccline.cmdindent = (firstc > 0 ? indent : 0);
// alloc initial ccline.cmdbuff // alloc initial ccline.cmdbuff
alloc_cmdbuff(exmode_active ? 250 : indent + 1); alloc_cmdbuff(indent + 50);
if (ccline.cmdbuff == NULL) if (ccline.cmdbuff == NULL)
return FAIL; return FAIL;
ccline.cmdlen = ccline.cmdpos = 0; ccline.cmdlen = ccline.cmdpos = 0;

10
src/testdir/test_ex_mode.vim
View File

@@ -241,4 +241,14 @@ func Test_ex_mode_count_overflow()
call delete('Xexmodescript') call delete('Xexmodescript')
endfunc endfunc
func Test_ex_mode_large_indent()
new
set ts=500 ai
call setline(1, "\t")
exe "normal gQi\<CR>."
set ts=8 noai
bwipe!
endfunc
" vim: shiftwidth=2 sts=2 expandtab " vim: shiftwidth=2 sts=2 expandtab

2
src/version.c
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@@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] = static int included_patches[] =
{ /* Add new patch number below this line */ { /* Add new patch number below this line */
/**/
4214,
/**/ /**/
4213, 4213,
/**/ /**/