Additional info; when I change the linking order of pcre and poco I got
a different output:
$ g++ regex.cc -lPocoFoundation -lpcre
$ ./a.out
Poco 0x01030600 on Linux 4.2.0-35-generic @ x86_64
Poco match 1234567890 to pattern ^[0-9]{10} matches? no
Poco match 123456789 to pattern ^[0-9]{10} matches? no
PCRE 8.31 2012-07-06
PCRE match 1234567890 to pattern ^[0-9]{10} matches? yes
PRCE match 123456789 to pattern ^[0-9]{10} matches? yes
$ g++ regex.cc -lpcre -lPocoFoundation
$ ./a.out
Poco 0x01030600 on Linux 4.2.0-35-generic @ x86_64
Poco match 1234567890 to pattern ^[0-9]{10} matches? yes
Poco match 123456789 to pattern ^[0-9]{10} matches? no
PCRE 8.31 2012-07-06
PCRE match 1234567890 to pattern ^[0-9]{10} matches? yes
PRCE match 123456789 to pattern ^[0-9]{10} matches? no
Our system uses heavily Poco's StringTokenizer and Regex classes which
are not working correctly on 14.04 and I'm most interested in a solution
to get it back working on 14.04 :)
I'm not familiar with LD_PRELOAD and the also do not fully understand
replies like 'Yoshiki Kanemoto (yocchiman) wrote on 2015-05-01' so if
anyone could tell we what the best approach here would be I would very
greatfull
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https://bugs.launchpad.net/bugs/1361610
Title:
libPCRE3 8.31 regex matching is not working
Status in pcre3 package in Ubuntu:
Invalid
Status in poco package in Ubuntu:
Confirmed
Bug description:
It looks like that libPCRE3 8.31 included in Ubuntu 13.10 does not
handle regex matching alright. This also affects the libPocoFoundation
RegularExpression classes.
I attached a proof-of-concept which tests a good and bad heystack
string to a regex pattern with Poco, Boost and PCRE. I tested it on
two different machines with the following output:
Ubuntu 13.10 3.11.0-13-generic #20-Ubuntu SMP Wed Oct 23 17:26:33 UTC 2013
i686 i686 i686 GNU/Linux
Poco 0x01030600 on Linux 3.11.0-13-generic @ i686
Poco match 1234567890 to pattern ^[0-9]{10} matches? no --> NOT CORRECT
Poco match 123456789 to pattern ^[0-9]{10} matches? no
Boost match 1234567890 to pattern ^[0-9]{10} matches? yes
Boost match 123456789 to pattern ^[0-9]{10} matches? no
PCRE 8.31 2012-07-06
PCRE match 1234567890 to pattern ^[0-9]{10} matches? yes
PRCE match 123456789 to pattern ^[0-9]{10} matches? yes --> NOT CORRECT
Ubuntu 12.04.3 LTS 3.8.0-29-generic #42~precise1-Ubuntu SMP Wed Aug 14
15:31:16 UTC 2013 i686 i686 i386 GNU/Linux
Poco 0x01030600 on Linux 3.8.0-29-generic @ i686
Poco match 1234567890 to pattern ^[0-9]{10} matches? yes --> OK
Poco match 123456789 to pattern ^[0-9]{10} matches? no
Boost match 1234567890 to pattern ^[0-9]{10} matches? yes
Boost match 123456789 to pattern ^[0-9]{10} matches? no
PCRE 8.12 2011-01-15
PCRE match 1234567890 to pattern ^[0-9]{10} matches? yes
PRCE match 123456789 to pattern ^[0-9]{10} matches? no --> OK
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