MDEV-29025 MTR doesn't print stack trace for bootstrap crashes

Author: midenok

mysql-test/mysql-test-run.pl

@@ -145,6 +145,7 @@ BEGIN
 my $mariabackup_path;
 my $mariabackup_exe;
 my $garbd_exe;
+my $num_saved_cores= 0; # Number of core files saved in vardir/log/ so far.
 
 our @global_suppressions;
 
@@ -726,7 +727,6 @@ sub main {
 sub run_test_server ($$$) {
  my ($server, $tests, $childs) = @_;
 
- my $num_saved_cores= 0; # Number of core files saved in vardir/log/ so far.
  my $num_saved_datadir= 0; # Number of datadirs saved in vardir/log/ so far.
  my $num_failed_test= 0; # Number of tests failed so far
  my $test_failure= 0; # Set true if test suite failed
@@ -3246,6 +3246,19 @@ sub mysql_install_db {
 verbose => $opt_verbose,
  ) != 0)
  {
+ find(
+ {
+ no_chdir => 1,
+ wanted => sub
+ {
+ My::CoreDump::core_wanted(\$num_saved_cores,
+ $opt_max_save_core,
+ @opt_cases == 0,
+ $exe_mysqld_bootstrap, $opt_parallel);
+ }
+ },
+ $install_datadir);
+
  my $data= mtr_grab_file($path_bootstrap_log);
  mtr_error("Error executing mysqld --bootstrap\n" .
  "Could not install system database from $bootstrap_sql_file\n" .