diff options
| author | Bram Moolenaar <Bram@vim.org> | 2022-11-12 16:36:35 +0000 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2022-11-12 16:36:35 +0000 |
| commit | 6600447c7b0a1be3a64d07a318bacdfaae0cac4b (patch) | |
| tree | d95ddfe17a9666dd6db6fd80e9adb0bdef42a615 /src/ex_cmds.c | |
| parent | 4c8d2f02b3ce037bbe1d5ee12887e343c6bde88f (diff) | |
patch 9.0.0864: crash when using "!!" without a previous shell commandv9.0.0864
Problem: Crash when using "!!" without a previous shell command.
Solution: Check "prevcmd" is not NULL. (closes #11487)
Diffstat (limited to 'src/ex_cmds.c')
| -rw-r--r-- | src/ex_cmds.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/src/ex_cmds.c b/src/ex_cmds.c index 3cf07e4825..5b398089fd 100644 --- a/src/ex_cmds.c +++ b/src/ex_cmds.c @@ -859,6 +859,21 @@ free_prev_shellcmd(void) #endif /* + * Check that "prevcmd" is not NULL. If it is NULL then give an error message + * and return FALSE. + */ + static int +prevcmd_is_set(void) +{ + if (prevcmd == NULL) + { + emsg(_(e_no_previous_command)); + return FALSE; + } + return TRUE; +} + +/* * Handle the ":!cmd" command. Also for ":r !cmd" and ":w !cmd" * Bangs in the argument are replaced with the previously entered command. * Remember the argument. @@ -913,9 +928,8 @@ do_bang( len += (int)STRLEN(newcmd); if (ins_prevcmd) { - if (prevcmd == NULL) + if (!prevcmd_is_set()) { - emsg(_(e_no_previous_command)); vim_free(newcmd); return; } @@ -971,6 +985,9 @@ do_bang( if (bangredo) // put cmd in redo buffer for ! command { + if (!prevcmd_is_set()) + goto theend; + // If % or # appears in the command, it must have been escaped. // Reescape them, so that redoing them does not substitute them by the // buffername. @@ -1020,6 +1037,8 @@ do_bang( do_filter(line1, line2, eap, newcmd, do_in, do_out); apply_autocmds(EVENT_SHELLFILTERPOST, NULL, NULL, FALSE, curbuf); } + +theend: if (free_newcmd) vim_free(newcmd); } |