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| author | Bram Moolenaar <Bram@vim.org> | 2022-05-16 19:40:59 +0100 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2022-05-16 19:40:59 +0100 |
| commit | 7ce5b2b590256ce53d6af28c1d203fb3bc1d2d97 (patch) | |
| tree | d40856d0b0eb3723b94a0543db98cd8d96cb2d50 /src/misc2.c | |
| parent | 60ae0e71490c97f2871a6344aca61cacf220f813 (diff) | |
| download | vim-git-7ce5b2b590256ce53d6af28c1d203fb3bc1d2d97.tar.gz | |
patch 8.2.4969: changing text in Visual mode may cause invalid memory accessv8.2.4969
Problem: Changing text in Visual mode may cause invalid memory access.
Solution: Check the Visual position after making a change.
Diffstat (limited to 'src/misc2.c')
| -rw-r--r-- | src/misc2.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/src/misc2.c b/src/misc2.c index 7840ea98f..e03ca4936 100644 --- a/src/misc2.c +++ b/src/misc2.c @@ -622,6 +622,31 @@ check_cursor(void) check_cursor_col(); } +/* + * Check if VIsual position is valid, correct it if not. + * Can be called when in Visual mode and a change has been made. + */ + void +check_visual_pos(void) +{ + if (VIsual.lnum > curbuf->b_ml.ml_line_count) + { + VIsual.lnum = curbuf->b_ml.ml_line_count; + VIsual.col = 0; + VIsual.coladd = 0; + } + else + { + int len = (int)STRLEN(ml_get(VIsual.lnum)); + + if (VIsual.col > len) + { + VIsual.col = len; + VIsual.coladd = 0; + } + } +} + #if defined(FEAT_TEXTOBJ) || defined(PROTO) /* * Make sure curwin->w_cursor is not on the NUL at the end of the line. @@ -2416,7 +2441,7 @@ get_user_name(char_u *buf, int len) return OK; } -#if defined(EXITFREE) || defined(PROTOS) +#if defined(EXITFREE) || defined(PROTO) /* * Free the memory allocated by get_user_name() */ |