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fix(coverity/554963): preallocate msg.items to avoid FORWARD_NULL #34484

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*** CID 554963:           (FORWARD_NULL)
/src/nvim/memline.c: 3484             in findswapname()
3478                 if (swap_exists_action != SEA_NONE) {
3479                   kv_printf(msg, _("Swap file \""));
3480                   kv_printf(msg, "%s", fhname);
3481                   kv_printf(msg, _("\" already exists!"));
3482                   char *run_but = _("&Open Read-Only\n&Edit anyway\n&Recover\n&Quit\n&Abort");
3483                   char *but = _("&Open Read-Only\n&Edit anyway\n&Recover\n&Delete it\n&Quit\n&Abort");
>>>     CID 554963:           (FORWARD_NULL)
>>>     Passing null pointer "msg.items" to "do_dialog", which dereferences it.
3484                   choice = (sea_choice_T)do_dialog(VIM_WARNING, _("VIM - ATTENTION"), msg.items,
3485                                                    proc_running ? run_but : but, 1, NULL, false);
3486
3487                   // compensate for missing "Delete it" button
3488                   choice += proc_running && choice >= 4;
3489                   // pretend screen didn't scroll, need redraw anyway
/src/nvim/memline.c: 3492             in findswapname()
3486
3487                   // compensate for missing "Delete it" button
3488                   choice += proc_running && choice >= 4;
3489                   // pretend screen didn't scroll, need redraw anyway
3490                   msg_reset_scroll();
3491                 } else {
>>>     CID 554963:           (FORWARD_NULL)
>>>     Passing null pointer "msg.items" to "msg_outtrans", which dereferences it.
3492                   msg_outtrans(msg.items, 0, false);
3493                 }
3494                 no_wait_return--;
3495                 kv_destroy(msg);
3496                 xfree(fhname);
3497               }
This commit is contained in:
luukvbaal
2025-06-13 14:19:30 +02:00
committed by GitHub
parent 29c8dabd41
commit 3e30323135
1 changed files with 2 additions and 0 deletions
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2
src/nvim/memline.c
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@@ -1403,6 +1403,7 @@ int recover_names(char *fname, bool do_list, list_T *ret_list, int nr, char **fn
msg_puts(path_tail(files[i]));
msg_putchar('\n');
StringBuilder msg = KV_INITIAL_VALUE;
kv_resize(msg, IOSIZE);
swapfile_info(files[i], &msg);
msg_outtrans(msg.items, 0, false);
kv_destroy(msg);
@@ -3464,6 +3465,7 @@ static char *findswapname(buf_T *buf, char **dirp, char *old_fname, bool *found_
no_wait_return++;
// Show info about the existing swapfile.
StringBuilder msg = KV_INITIAL_VALUE;
kv_resize(msg, IOSIZE);
char *fhname = home_replace_save(NULL, fname);
attention_message(buf, fname, fhname, &msg);