Hi Daniel,

The regex does not find a match because you have a '+' in your file path. The logic might be worth fixing, but as a workaround, could you please try to remove it?

Yes renaming works. Thanks for identifying the obvious regex fault.

Logging: ./mysql-test-run.pl --force
Using suites: main-,archive-,binlog-,csv-,federated-,funcs_1-,funcs_2-,handler-,heap-,innodb-,maria-,optimizer_unfixed_bugs-,oqgraph-,parts-,percona-,perfschema-,plugins-,rpl-,sphinx-,sys_vars-,unit-,vcol-
vardir: /home/danblack/mariadb-5.5-5.5.32_maria/builddir/mysql-test/var
Removing old var directory...
Creating var directory '/home/danblack/mariadb-5.5-5.5.32_maria/builddir/mysql-test/var'...
Checking supported features...
MariaDB Version 5.5.32-MariaDB-1~wheezy

Given the standard "apt-get source mariadb-5.5" creates this directory name I still think its worth fixing.

Since exe_mysqld isn't a regex escape everything that makes it look like one.

so add:
$exe_mysqld =~ s/([\\.+*{}()[\]])/\\\1/g;

before: mtr_error("Could not find version of MariaDB")

to test:
perl e '$a="/home/danblack/maria
db()5.5-5.5.32+m[]a*ria"; $a =~ s/([\\.+*{}()[\]])/\\\1/g; print "$a\n";'
/home/danblack/maria\\db-()5\.5-5\.5\.32+m[]a*ria

I don't feel quite safe modifying exe_mysqld, it might happen that it's used somewhere else. On the other hand, there seems no good reason to match the line with the complete path to mysqld, it should be enough to start with the file name, something like:

=== modified file 'mysql-test/mysql-test-run.pl'
— mysql-test/mysql-test-run.pl 2013-07-16 17:09:54 +0000
+++ mysql-test/mysql-test-run.pl 2013-09-05 23:35:53 +0000
@@ -1889,8 +1889,9 @@
$list =~ s/\n

(\S)/ $1/g;

my @list= split '\n', $list;
+ my $bn = basename($exe_mysqld);
mtr_error("Could not find version of MariaDB")

• unless shift(@list) =~ /^$exe_mysqld\s+Ver\s(\d+)\.(\d+)\.(\d+)(\S*)/;
  + unless shift(@list) =~ /$bn\s+Ver\s(\d+)\.(\d+)\.(\d+)(\S*)/;
  $mysql_version_id= $1*10000 + $2*100 + $3;
  $mysql_version_extra= $4;
  mtr_report("MariaDB Version $1.$2.$3$4");

I'll pass it to serg to decide.

> I don't feel quite safe modifying exe_mysqld, it might happen that it's used somewhere else.

It was a local variable that wasn't used again.

> On the other hand, there seems no good reason to match the line with the complete path to mysqld, it should be enough to start with the file name, something like:

It can get the incorrect version if a exe_mysql contains for example "/test/mysqld Ver 5.6.5/mariadb-5.5-5.5.32+maria/builddir/sql/mysqld"

You are right of course, sorry, blame late night for that. Assigning back to myself to take another look.

Hi Sergei,

See the original suggestion by Daniel here: https://mariadb.atlassian.net/browse/MDEV-4977?focusedCommentId=34410&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-34410 .

If the standard installation procedure creates a path which is not further recognized by MTR, I think it should be fixed.

Patch added for clarity

Nice use of \Q\E in regex, thanks Sergei