To: vim_dev@googlegroups.com Subject: Patch 8.1.2198 Fcc: outbox From: Bram Moolenaar Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ------------ Patch 8.1.2198 Problem: Crash when using :center in autocommand. Solution: Bail out early for an empty line. (Dominique pelle, closes #5095) Files: src/ex_cmds.c, src/testdir/test_textformat.vim *** ../vim-8.1.2197/src/ex_cmds.c 2019-10-20 18:17:08.367431701 +0200 --- src/ex_cmds.c 2019-10-21 23:08:03.033053099 +0200 *************** *** 251,268 **** int save; int len; ! /* find the first non-blank character */ line = ml_get_curline(); first = skipwhite(line); ! /* find the character after the last non-blank character */ for (last = first + STRLEN(first); last > first && VIM_ISWHITE(last[-1]); --last) ; save = *last; *last = NUL; ! len = linetabsize(line); /* get line length */ ! if (has_tab != NULL) /* check for embedded TAB */ *has_tab = (vim_strchr(first, TAB) != NULL); *last = save; --- 251,273 ---- int save; int len; ! // Get the line. If it's empty bail out early (could be the empty string ! // for an unloaded buffer). line = ml_get_curline(); + if (*line == NUL) + return 0; + + // find the first non-blank character first = skipwhite(line); ! // find the character after the last non-blank character for (last = first + STRLEN(first); last > first && VIM_ISWHITE(last[-1]); --last) ; save = *last; *last = NUL; ! len = linetabsize(line); // get line length ! if (has_tab != NULL) // check for embedded TAB *has_tab = (vim_strchr(first, TAB) != NULL); *last = save; *** ../vim-8.1.2197/src/testdir/test_textformat.vim 2019-01-11 22:15:00.519123428 +0100 --- src/testdir/test_textformat.vim 2019-10-21 23:04:32.782096728 +0200 *************** *** 1,4 **** --- 1,7 ---- " Tests for the various 'formatoptions' settings + + source check.vim + func Test_text_format() enew! *************** *** 489,491 **** --- 492,511 ---- bwipe! set fo& ai& bs& endfunc + + func Test_crash_github_issue_5095() + CheckFeature autocmd + + " This used to segfault, see https://github.com/vim/vim/issues/5095 + augroup testing + au BufNew x center + augroup END + + next! x + + bw + augroup testing + au! + augroup END + augroup! testing + endfunc *** ../vim-8.1.2197/src/version.c 2019-10-20 22:27:06.373331908 +0200 --- src/version.c 2019-10-21 23:00:14.479449866 +0200 *************** *** 743,744 **** --- 743,746 ---- { /* Add new patch number below this line */ + /**/ + 2198, /**/ -- DENNIS: Oh, very nice. King, eh! I expect you've got a palace and fine clothes and courtiers and plenty of food. And how d'you get that? By exploiting the workers! By hanging on to outdated imperialist dogma which perpetuates the social and economic differences in our society! "Monty Python and the Holy Grail" PYTHON (MONTY) PICTURES LTD /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\ /// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\ \\\ an exciting new programming language -- http://www.Zimbu.org /// \\\ help me help AIDS victims -- http://ICCF-Holland.org ///