Mercurial > vim
changeset 6170:3ee39fe2df7d v7.4.421
updated for version 7.4.421
Problem: Crash when searching for "\ze*". (Urtica Dioica)
Solution: Disallow a multi after \ze and \zs.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Fri, 29 Aug 2014 11:56:32 +0200 |
| parents | 5f3c1d1bfe9d |
| children | a5a88ec312f3 |
| files | src/regexp_nfa.c src/testdir/test64.in src/testdir/test64.ok src/version.c |
| diffstat | 4 files changed, 33 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/src/regexp_nfa.c +++ b/src/regexp_nfa.c @@ -291,6 +291,7 @@ static int nfa_regpiece __ARGS((void)); static int nfa_regconcat __ARGS((void)); static int nfa_regbranch __ARGS((void)); static int nfa_reg __ARGS((int paren)); +static int re_mult_next __ARGS((char *what)); #ifdef DEBUG static void nfa_set_code __ARGS((int c)); static void nfa_postfix_dump __ARGS((char_u *expr, int retval)); @@ -1323,10 +1324,14 @@ nfa_regatom() { case 's': EMIT(NFA_ZSTART); + if (re_mult_next("\\zs") == FAIL) + return FAIL; break; case 'e': EMIT(NFA_ZEND); nfa_has_zend = TRUE; + if (re_mult_next("\\ze") == FAIL) + return FAIL; break; #ifdef FEAT_SYN_HL case '1': @@ -2276,6 +2281,18 @@ nfa_reg(paren) return OK; } +/* + * Used in a place where no * or \+ can follow. + */ + static int +re_mult_next(what) + char *what; +{ + if (re_multi_type(peekchr()) == MULTI_MULT) + EMSG2_RET_FAIL(_("E888: (NFA regexp) cannot repeat %s"), what); + return OK; +} + #ifdef DEBUG static char_u code[50];
--- a/src/testdir/test64.in +++ b/src/testdir/test64.in @@ -459,7 +459,7 @@ STARTTEST : let text = t[2] : let matchidx = 3 : for engine in [0, 1, 2] -: if engine == 2 && re == 0 || engine == 1 && re ==1 +: if engine == 2 && re == 0 || engine == 1 && re == 1 : continue : endif : let ®expengine = engine @@ -608,6 +608,17 @@ 50%/\%$ "ayb20gg/..\%$ "bybGo"apo"bp:" :" +:" Check for detecting error +:set regexpengine=2 +:for pat in [' \ze*', ' \zs*'] +: try +: let l = matchlist('x x', pat) +: $put ='E888 NOT detected for ' . pat +: catch +: $put ='E888 detected for ' . pat +: endtry +:endfor +:" :""""" Write the results """"""""""""" :/\%#=1^Results/,$wq! test.out ENDTEST