About the problem that pcre2 cannot work on Debian of WSL2.

[CandyMi]

TYPE	NAME	VALUE
OS	WSL2-Debain	v10
Compiler	GCC	v8.3.0
Software	PCRE2	v10.32

question

I have a problem starting Debian on WSL2 and installing pcre2posix via apt, please refer to the following pseudo code:

   #include <pcre2posix.h>
   regex_t *re = allocate memory;
   regcomp(re, "(.+)", ...);
   regexec(re, ....);

The return result of regexec is that it cannot find, match any characters. When I change to posix regex or pcre (v1) the problem disappears. If I download pcre2 and use cmake to compile and install The problem also disappeared after that.

I found a line of comment inside the pcre2posix file:

/*
Debian had a patch that used different names. These are now here to save
them having to maintain their own patch, but are not documented by PCRE2.
*/

Does this have anything to do with the problem I'm having? Or maybe this is a bug in a version iteration?

Note: On my personal MacBookPro, FreeBSD installed with pkg/brew without problems.

More information

Compile manually:

 CandyMi@localhost:~/cfadmin $ ldd lre.so 
        linux-vdso.so.1
        libpcre2-posix.so.3 => /usr/local/lib/libpcre2-posix.so.3
        libpcre2-8.so.0 => /usr/local/lib/libpcre2-8.so.0
        ...
        .......

apt install:

 CandyMi@localhost:~/cfadmin $ ldd lre.so 
        linux-vdso.so.1
        libpcre2-posix.so.3 => /usr/lib/x86_64-linux-gnu/libpcre2-posix.so.3
        libpcre2-8.so.0 => /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0
        ...
        .......

[PhilipHazel]

PCRE2 10.32 was released in September 2018 - almost four years ago - and has been superseded several times. We are currently on 10.40. Perhaps your source install used a later version, because there have been changes in the relevant area. See the ChangeLog entry for version 10.36, change 8. I don't think there's any action to be taken here, so I'm closing this issue.