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To: vim_dev@googlegroups.com
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Subject: Patch 7.4.421
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Fcc: outbox
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From: Bram Moolenaar <Bram@moolenaar.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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------------
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Patch 7.4.421
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Problem: Crash when searching for "\ze*". (Urtica Dioica)
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Solution: Disallow a multi after \ze and \zs.
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Files: src/regexp_nfa.c, src/testdir/test64.in, src/testdir/test64.ok
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*** ../vim-7.4.420/src/regexp_nfa.c 2014-05-13 19:37:19.489786520 +0200
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--- src/regexp_nfa.c 2014-08-29 11:14:12.030416520 +0200
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***************
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*** 291,296 ****
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--- 291,297 ----
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static int nfa_regconcat __ARGS((void));
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static int nfa_regbranch __ARGS((void));
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static int nfa_reg __ARGS((int paren));
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+ static int re_mult_next __ARGS((char *what));
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#ifdef DEBUG
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static void nfa_set_code __ARGS((int c));
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static void nfa_postfix_dump __ARGS((char_u *expr, int retval));
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***************
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*** 1323,1332 ****
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--- 1324,1337 ----
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{
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case 's':
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EMIT(NFA_ZSTART);
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+ if (re_mult_next("\\zs") == FAIL)
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+ return FAIL;
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break;
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case 'e':
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EMIT(NFA_ZEND);
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nfa_has_zend = TRUE;
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+ if (re_mult_next("\\ze") == FAIL)
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+ return FAIL;
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break;
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#ifdef FEAT_SYN_HL
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case '1':
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***************
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*** 2276,2281 ****
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--- 2281,2298 ----
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return OK;
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}
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+ /*
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+ * Used in a place where no * or \+ can follow.
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+ */
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+ static int
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+ re_mult_next(what)
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+ char *what;
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+ {
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+ if (re_multi_type(peekchr()) == MULTI_MULT)
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+ EMSG2_RET_FAIL(_("E888: (NFA regexp) cannot repeat %s"), what);
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+ return OK;
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+ }
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+
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#ifdef DEBUG
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static char_u code[50];
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*** ../vim-7.4.420/src/testdir/test64.in 2014-05-13 16:44:25.633695709 +0200
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--- src/testdir/test64.in 2014-08-29 11:33:12.330419011 +0200
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***************
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*** 459,465 ****
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: let text = t[2]
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: let matchidx = 3
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: for engine in [0, 1, 2]
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! : if engine == 2 && re == 0 || engine == 1 && re ==1
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: continue
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: endif
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: let ®expengine = engine
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--- 459,465 ----
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: let text = t[2]
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: let matchidx = 3
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: for engine in [0, 1, 2]
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! : if engine == 2 && re == 0 || engine == 1 && re == 1
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: continue
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: endif
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: let ®expengine = engine
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***************
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*** 608,613 ****
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--- 608,624 ----
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"ayb20gg/..\%$
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"bybGo?"apo?"bp:"
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:"
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+ :" Check for detecting error
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+ :set regexpengine=2
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+ :for pat in [' \ze*', ' \zs*']
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+ : try
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+ : let l = matchlist('x x', pat)
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+ : $put ='E888 NOT detected for ' . pat
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+ : catch
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+ : $put ='E888 detected for ' . pat
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+ : endtry
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+ :endfor
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+ :"
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:""""" Write the results """""""""""""
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:/\%#=1^Results/,$wq! test.out
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ENDTEST
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*** ../vim-7.4.420/src/testdir/test64.ok 2014-05-13 16:44:25.633695709 +0200
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--- src/testdir/test64.ok 2014-08-29 11:36:05.782419390 +0200
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***************
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*** 1097,1099 ****
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--- 1097,1101 ----
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Test END
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EN
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E
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+ E888 detected for \ze*
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+ E888 detected for \zs*
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*** ../vim-7.4.420/src/version.c 2014-08-29 10:04:32.226407390 +0200
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--- src/version.c 2014-08-29 11:37:15.794419543 +0200
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***************
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*** 743,744 ****
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--- 743,746 ----
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{ /* Add new patch number below this line */
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+ /**/
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+ 421,
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/**/
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--
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From "know your smileys":
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:----} You lie like Pinocchio
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/// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
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/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
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\\\ an exciting new programming language -- http://www.Zimbu.org ///
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\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
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