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From 9febe70a64d1669ec0151e51149af1e66bc04b5f Mon Sep 17 00:00:00 2001
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From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Tue, 21 Jul 2015 13:47:22 +0000
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Subject: [PATCH] Fix "run for ever" bug for deeply nested [: sequences.
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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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Ported to 8.32:
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commit 485a930d11bfd1ba8c292fe14976f0a3e12c2b93
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Author: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
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Date: Tue Jul 21 13:47:22 2015 +0000
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Fix "run for ever" bug for deeply nested [: sequences.
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git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1579 2f5784b3-3f2a-0410-8824-cb99058d5e15
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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pcre_compile.c | 17 +++++------------
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testdata/testinput2 | 2 ++
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testdata/testoutput2 | 3 +++
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3 files changed, 10 insertions(+), 12 deletions(-)
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diff --git a/pcre_compile.c b/pcre_compile.c
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index aa7f4d6..8eb4b0f 100644
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--- a/pcre_compile.c
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+++ b/pcre_compile.c
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@@ -2780,19 +2780,12 @@ for (++ptr; *ptr != CHAR_NULL; ptr++)
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{
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if (*ptr == CHAR_BACKSLASH && ptr[1] == CHAR_RIGHT_SQUARE_BRACKET)
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ptr++;
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- else if (*ptr == CHAR_RIGHT_SQUARE_BRACKET) return FALSE;
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- else
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+ else if ((*ptr == CHAR_LEFT_SQUARE_BRACKET && ptr[1] == terminator) ||
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+ *ptr == CHAR_RIGHT_SQUARE_BRACKET) return FALSE;
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+ else if (*ptr == terminator && ptr[1] == CHAR_RIGHT_SQUARE_BRACKET)
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{
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- if (*ptr == terminator && ptr[1] == CHAR_RIGHT_SQUARE_BRACKET)
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- {
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- *endptr = ptr;
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- return TRUE;
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- }
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- if (*ptr == CHAR_LEFT_SQUARE_BRACKET &&
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- (ptr[1] == CHAR_COLON || ptr[1] == CHAR_DOT ||
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- ptr[1] == CHAR_EQUALS_SIGN) &&
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- check_posix_syntax(ptr, endptr))
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- return FALSE;
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+ *endptr = ptr;
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+ return TRUE;
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}
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}
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return FALSE;
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diff --git a/testdata/testinput2 b/testdata/testinput2
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index 2f460dc..61535de 100644
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--- a/testdata/testinput2
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+++ b/testdata/testinput2
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@@ -3829,4 +3829,6 @@ settings of the anchored and startline bits. --/
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/(?=di(?<=(?1))|(?=(.))))/
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+"[[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[:::::::::::::::::[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[[[:::E[[[:[:[[:[:::[[:::E[[[:[:[[:'[:::::E[[[:[::::::[[[:[[[[[[[::E[[[:[::::::[[[:[[[[[[[[:[[::[::::[[:::::::[[:[[[[[[[:[[::[:[[:[~"
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+
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/-- End of testinput2 --/
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diff --git a/testdata/testoutput2 b/testdata/testoutput2
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index 3c09fdf..ab1b2ca 100644
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--- a/testdata/testoutput2
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+++ b/testdata/testoutput2
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@@ -12543,4 +12543,7 @@ No match
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/(?=di(?<=(?1))|(?=(.))))/
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Failed: unmatched parentheses at offset 23
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+"[[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[:::::::::::::::::[[.\xe8Nq\xffq\xff\xe0\x2|||::Nq\xffq\xff\xe0\x6\x2|||::[[[:[::::::[[[[[::::::::[:[[[:[:::[[[[[[[[[[[[[[:::E[[[:[:[[:[:::[[:::E[[[:[:[[:'[:::::E[[[:[::::::[[[:[[[[[[[::E[[[:[::::::[[[:[[[[[[[[:[[::[::::[[:::::::[[:[[[[[[[:[[::[:[[:[~"
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+Failed: missing terminating ] for character class at offset 353
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+
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/-- End of testinput2 --/
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--
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2.5.5
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