$ perlbrew exec --with perl-5.40.0,5.40.3,perl-5.42.0,perl-5.38.2,perl-5.38.4 perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/; print "survived ok!\n";' perl-5.40.0 ========== Command terminated with non-zero status. Command [perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/; print "survived ok!\n";'] terminated with exit code 0 ($? = 139) under the following perl environment: ... perl-5.40.3 ========== survived ok! perl-5.42.0 ========== survived ok! perl-5.38.2 ========== Command terminated with non-zero status. Command [perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/; print "survived ok!\n";'] terminated with exit code 0 ($? = 139) under the following perl environment: ... perl-5.38.4 ========== survived ok!