WL#4189 mtr.pl v2

 - Make a rough filtering of the servers error log and write
   all suspicious warnings to $error_log.warnings
   The .warnings file is then examined more carefully by check_warnings.test
 - This will speed things up, doing all of this in a server running
   under valgrind takes far too long time.

mysql-test/include/check-warnings.test

-
 #
 # This test is executed once after each test to check the servers
 # for unexpected warnings found in the servers error log
 #
+# NOTE! mysql-test-run.pl has already done a rough filtering
+# of the file and written any suspicious lines
+# to $error_log.warnings file
+#
 --disable_query_log
 
 # Don't write these queries to binlog
@@ -17,41 +20,21 @@ use mtr;
 
 create temporary table error_log (
   row int auto_increment primary key,
-  suspicious int default 0,
+  suspicious int default 1,
   file_name varchar(255),
   line varchar(1024) default null
 ) engine=myisam;
 
 # Get the name of servers error log
 let $log_error= query_get_value(show variables like 'log_error', Value, 1);
+let $log_warning= $log_error.warnings;
 
-# Try to load the error log into the temporary table
---error 0,1085
-eval load data infile '$log_error' into table error_log
-  fields terminated by 'xykls37' (line)
+# Load the warnings into a temporary table
+eval load data infile '$log_warning' into table error_log
+  fields terminated by 'xykls37'
+  ignore 1 lines
+  (line)
   set file_name='$log_error';
-if ($mysql_errno)
-{
-  # The error log was not world readable, this is normally
-  # caused by a "flush logs" in the test program. mysqld
-  # will then rename the error log to .err-old and open
-  # a new error log file that is not world readable.
-  # chmod the error log file and try to open it again
-  chmod 0644 $log_error;
-  eval load data infile '$log_error' into table error_log
-    fields terminated by 'xykls37' (line)
-    set file_name='$log_error';
-
-  # Also load the .err-old file where there might be
-  # additional warnings
-
-  # Disabled intil Bug#42320 has been fixed
-  #let $old_log_error = $log_error-old;
-  #chmod 0644 $old_log_error;
-  #eval load data infile '$old_log_error' into table error_log
-  #  fields terminated by 'xykls37' (line)
-  #  set file_name='$old_log_error';
-}
 
 # Call check_warnings to filter out any warning in
 # the error_log table

mysql-test/include/mtr_warnings.sql

@@ -186,42 +186,6 @@ BEGIN
   -- Don't write these queries to binlog
   SET SQL_LOG_BIN=0;
 
-  --
-  -- Remove all lines belonging to previous tests
-  --
-  SELECT COALESCE(MAX(row),0) INTO @max_row
-    FROM error_log
-      WHERE line REGEXP "^CURRENT_TEST:";
-  DELETE FROM error_log WHERE row < @max_row;
-
-  --
-  -- Mark all lines with certain patterns as suspicious
-  --
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "^Warning:|mysqld: Warning|\\[Warning\\]";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "^Error:|\\[ERROR\\]";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "^==.* at 0x";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "InnoDB: Warning";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "^safe_mutex:|allocated at line";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "missing DBUG_RETURN";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "Attempting backtrace";
-  UPDATE error_log SET suspicious= 1
-    WHERE suspicious=0
-      AND line REGEXP "Assertion .* failed";
-
   --
   -- Remove mark from lines that are suppressed by global suppressions
   --
@@ -236,17 +200,6 @@ BEGIN
     SET suspicious=0
       WHERE el.suspicious=1 AND el.line REGEXP ts.pattern;
 
-  --
-  -- Suppress intentional safemalloc dump warnings
-  -- i.e inside "Begin/End safemalloc memeory dump" block
-  --
-  SELECT @min_row:=row
-    FROM error_log WHERE line = "Begin safemalloc memory dump:";
-  SELECT @max_row:=row
-    FROM error_log WHERE line = "End safemalloc memory dump.";
-  UPDATE error_log SET suspicious=0
-    WHERE suspicious=1 AND row > @min_row AND row < @max_row;
-
   --
   -- Get the number of marked lines and return result
   --

mysql-test/mysql-test-run.pl

@@ -3356,6 +3356,85 @@ sub run_testcase ($) {
 }
 
 
+#
+# Perform a rough examination of the servers
+# error log and write all lines that look
+# suspicious into $error_log.warnings
+#
+sub extract_warning_lines ($) {
+  my ($error_log) = @_;
+
+  # Open the servers .err log file and read all lines
+  # belonging to current tets into @lines
+  my $Ferr = IO::File->new($error_log)
+    or mtr_error("Could not open file '$error_log' for reading: $!");
+
+  my @lines;
+  while ( my $line = <$Ferr> )
+  {
+    if ( $line =~ /"^CURRENT_TEST:"/ )
+    {
+      # Throw away lines from previous tests
+      @lines = ();
+    }
+    push(@lines, $line);
+  }
+  $Ferr = undef; # Close error log file
+
+  # mysql_client_test.test sends a COM_DEBUG packet to the server
+  # to provoke a SAFEMALLOC leak report, ignore any warnings
+  # between "Begin/end safemalloc memory dump"
+  if ( grep(/Begin safemalloc memory dump:/, @lines) > 0)
+  {
+    my $discard_lines= 1;
+    foreach my $line ( @lines )
+    {
+      if ($line =~ /Begin safemalloc memory dump:/){
+	$discard_lines = 1;
+      } elsif ($line =~ /End safemalloc memory dump./){
+	$discard_lines = 0;
+      }
+
+      if ($discard_lines){
+	$line = "ignored";
+      }
+    }
+  }
+
+  # Write all suspicious lines to $error_log.warnings file
+  my $warning_log = "$error_log.warnings";
+  my $Fwarn = IO::File->new($warning_log, "w")
+    or die("Could not open file '$warning_log' for writing: $!");
+  print $Fwarn "Suspicious lines from $error_log\n";
+
+  my @patterns =
+    (
+     qr/^Warning:|mysqld: Warning|\\[Warning\\]/,
+     qr/^Error:|\\[ERROR\\]/,
+     qr/^==.* at 0x/,
+     qr/InnoDB: Warning|InnoDB: Error/,
+     qr/^safe_mutex:|allocated at line/,
+     qr/missing DBUG_RETURN/,
+     qr/Attempting backtrace/,
+     qr/Assertion .* failed/,
+    );
+
+  foreach my $line ( @lines )
+  {
+    foreach my $pat ( @patterns )
+    {
+      if ( $line =~ /$pat/ )
+      {
+	print $Fwarn $line;
+	last;
+      }
+    }
+  }
+  $Fwarn = undef; # Close file
+
+}
+
+
 # Run include/check-warnings.test
 #
 # RETURN VALUE
@@ -3368,6 +3447,8 @@ sub start_check_warnings ($$) {
 
   my $name= "warnings-".$mysqld->name();
 
+  extract_warning_lines($mysqld->value('log-error'));
+
   my $args;
   mtr_init_args(\$args);