diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | Doc/Zsh/mod_pcre.yo | 7 | ||||
| -rw-r--r-- | Src/Modules/pcre.c | 9 |
3 files changed, 21 insertions, 1 deletions
@@ -1,3 +1,9 @@ +2004-03-16 Clint Adams <clint@zsh.org> + + * 19631: Doc/Zsh/mod_pcre.yo, Src/Modules/pcre.c: avoid segfault + when pcre_study is called before pcre_compile; documentation on + pcre_compile options. + 2004-03-16 Peter Stephenson <pws@csr.com> * 19140 (patch reversed): Nicholas George: Src/builtin.c: Release diff --git a/Doc/Zsh/mod_pcre.yo b/Doc/Zsh/mod_pcre.yo index 8eadee38b..1d3d18954 100644 --- a/Doc/Zsh/mod_pcre.yo +++ b/Doc/Zsh/mod_pcre.yo @@ -8,6 +8,13 @@ startitem() findex(pcre_compile) item(tt(pcre_compile) [ tt(-aimx) ] var(PCRE))( Compiles a perl-compatible regular expression. + +Option tt(-a) will force the pattern to be anchored. +Option tt(-i) will compile a case-insensitive pattern. +Option tt(-m) will compile a multi-line pattern; that is, +tt(^) and tt($) will match newlines within the pattern. +Option tt(-x) will compile an extended pattern, wherein +whitespace and tt(#) comments are ignored. ) findex(pcre_study) item(tt(pcre_study))( diff --git a/Src/Modules/pcre.c b/Src/Modules/pcre.c index 36c437bc3..030d1c78a 100644 --- a/Src/Modules/pcre.c +++ b/Src/Modules/pcre.c @@ -3,7 +3,7 @@ * * This file is part of zsh, the Z shell. * - * Copyright (c) 2001 Clint Adams + * Copyright (c) 2001, 2002, 2003, 2004 Clint Adams * All rights reserved. * * Permission is hereby granted, without written agreement and without @@ -71,6 +71,13 @@ static int bin_pcre_study(char *nam, char **args, Options ops, int func) { const char *pcre_error; + + if (pcre_pattern == NULL) + { + zwarnnam(nam, "no pattern has been compiled for study: %s", + pcre_error, 0); + return 1; + } pcre_hints = pcre_study(pcre_pattern, 0, &pcre_error); if (pcre_error != NULL) |