Patch 8.2.4901

[Bram Moolenaar]

Patch 8.2.4901
Problem: NULL pointer access when using invalid pattern.
Solution: Check for failed regexp program.
Files: src/buffer.c, src/testdir/test_buffer.vim


*** ../vim-8.2.4900/src/buffer.c 2022-04-19 16:24:08.603559710 +0100
--- src/buffer.c 2022-05-07 11:26:21.781779201 +0100
***************
*** 2957,2963 ****
rmp->rm_ic = p_fic || ignore_case;
if (vim_regexec(rmp, name, (colnr_T)0))
match = name;
! else
{
// Replace $(HOME) with '~' and try matching again.
p = home_replace_save(NULL, name);
--- 2957,2963 ----
rmp->rm_ic = p_fic || ignore_case;
if (vim_regexec(rmp, name, (colnr_T)0))
match = name;
! else if (rmp->regprog != NULL)
{
// Replace $(HOME) with '~' and try matching again.
p = home_replace_save(NULL, name);
*** ../vim-8.2.4900/src/testdir/test_buffer.vim 2022-04-03 11:22:33.528172299 +0100
--- src/testdir/test_buffer.vim 2022-05-07 11:24:45.077556619 +0100
***************
*** 410,415 ****
--- 410,422 ----
set shellslash&
endfunc

+ " this was using a NULL pointer after failing to use the pattern
+ func Test_buf_pattern_invalid()
+ vsplit 0000000
+ silent! buf [0--]\&\zs*\zs*e
+ bwipe!
+ endfunc
+
" Test for the 'maxmem' and 'maxmemtot' options
func Test_buffer_maxmem()
" use 1KB per buffer and 2KB for all the buffers
*** ../vim-8.2.4900/src/version.c 2022-05-07 10:59:59.567615292 +0100
--- src/version.c 2022-05-07 11:26:56.541850516 +0100
***************
*** 748,749 ****
--- 748,751 ----
{ /* Add new patch number below this line */
+ /**/
+ 4901,
/**/

--
I have a watch cat! Just break in and she'll watch.

/// Bram Moolenaar -- Br...@Moolenaar.net -- http://www.Moolenaar.net \\\
/// \\\
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