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| author | hrs <hrs@FreeBSD.org> | 2008-11-09 01:10:21 +0000 |
|---|---|---|
| committer | hrs <hrs@FreeBSD.org> | 2008-11-09 01:10:21 +0000 |
| commit | 9fe9cedf42d903b585afbf27d6563b029d1b2873 (patch) | |
| tree | 8a44c6445bae92cad188471edb02b27f5fb0dddc /usr.bin/sed | |
| parent | c3eca8b8ccc2dc085e9ca65fd475705d81b1b09a (diff) | |
| download | FreeBSD-src-9fe9cedf42d903b585afbf27d6563b029d1b2873.zip FreeBSD-src-9fe9cedf42d903b585afbf27d6563b029d1b2873.tar.gz | |
Add workaround for a back reference when no corresponding
parenthesized subexpression is defined. For example, the
following command line caused unexpected behavior like
segmentation fault:
% echo test | sed -e 's/test/\1/'
PR: bin/126682
MFC after: 1 week
Diffstat (limited to 'usr.bin/sed')
| -rw-r--r-- | usr.bin/sed/compile.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/usr.bin/sed/compile.c b/usr.bin/sed/compile.c index 2e3a2ce..a5416ee 100644 --- a/usr.bin/sed/compile.c +++ b/usr.bin/sed/compile.c @@ -324,9 +324,17 @@ nonsel: /* Now parse the command */ if (p == NULL) errx(1, "%lu: %s: unterminated substitute pattern", linenum, fname); + + /* Compile RE with no case sensitivity temporarily */ + if (*re == '\0') + cmd->u.s->re = NULL; + else + cmd->u.s->re = compile_re(re, 0); --p; p = compile_subst(p, cmd->u.s); p = compile_flags(p, cmd->u.s); + + /* Recompile RE with case sensitivity from "I" flag if any */ if (*re == '\0') cmd->u.s->re = NULL; else |
