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authorBram Moolenaar <Bram@vim.org>2022-09-17 19:43:23 +0100
committerBram Moolenaar <Bram@vim.org>2022-09-17 19:43:23 +0100
commit1c3dd8ddcba63c1af5112e567215b3cec2de11d0 (patch)
treeaf01369780ad70339d079d0a9297d3dfe2b037b6 /src/ex_getln.c
parentfb593c5350e8fe23b608ded5a011cd7eefe73922 (diff)
patch 9.0.0490: using freed memory with cmdwin and BufEnter autocmdv9.0.0490
Problem: Using freed memory with cmdwin and BufEnter autocmd. Solution: Make sure pointer to b_p_iminsert is still valid.
Diffstat (limited to 'src/ex_getln.c')
-rw-r--r--src/ex_getln.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/ex_getln.c b/src/ex_getln.c
index 70436b31f0..a4fb61145c 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -1587,6 +1587,7 @@ getcmdline_int(
#endif
expand_T xpc;
long *b_im_ptr = NULL;
+ buf_T *b_im_ptr_buf = NULL; // buffer where b_im_ptr is valid
cmdline_info_T save_ccline;
int did_save_ccline = FALSE;
int cmdline_type;
@@ -1683,6 +1684,7 @@ getcmdline_int(
b_im_ptr = &curbuf->b_p_iminsert;
else
b_im_ptr = &curbuf->b_p_imsearch;
+ b_im_ptr_buf = curbuf;
if (*b_im_ptr == B_IMODE_LMAP)
State |= MODE_LANGMAP;
#ifdef HAVE_INPUT_METHOD
@@ -2034,7 +2036,8 @@ getcmdline_int(
goto cmdline_not_changed;
case Ctrl_HAT:
- cmdline_toggle_langmap(b_im_ptr);
+ cmdline_toggle_langmap(
+ buf_valid(b_im_ptr_buf) ? b_im_ptr : NULL);
goto cmdline_not_changed;
// case '@': only in very old vi
@@ -2544,7 +2547,8 @@ returncmd:
#endif
#ifdef HAVE_INPUT_METHOD
- if (b_im_ptr != NULL && *b_im_ptr != B_IMODE_LMAP)
+ if (b_im_ptr != NULL && buf_valid(b_im_ptr_buf)
+ && *b_im_ptr != B_IMODE_LMAP)
im_save_status(b_im_ptr);
im_set_active(FALSE);
#endif