patch 8.2.5079: DirChanged autocommand may use freed memory
Problem: DirChanged autocommand may use freed memory. (Shane-XB Qian)
Solution: Free the memory later. (closes #10555)
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 634a1bc..9a06999 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -7525,6 +7525,7 @@
int dir_differs;
char_u *acmd_fname = NULL;
char_u **pp;
+ char_u *tofree;
if (new_dir == NULL || allbuf_locked())
return FALSE;
@@ -7601,13 +7602,14 @@
pp = &curtab->tp_prevdir;
else
pp = &prev_dir;
- vim_free(*pp);
+ tofree = *pp; // new_dir may use this
*pp = pdir;
post_chdir(scope);
if (dir_differs)
apply_autocmds(EVENT_DIRCHANGED, acmd_fname, new_dir, FALSE, curbuf);
+ vim_free(tofree);
return TRUE;
}