Logs: REFTEST TEST-UNEXPECTED-FAIL | file:///C:/talos-slave/mozilla-central-w764-opt-u-jsreftest/build/jsreftest/tests/jsreftest.html?test=ecma_3/RegExp/perlstress-002.js | Section 101 of test - regexp = /^(?=(a+?))\1ab/ string = 'aaab' ERROR !!! regexp MATCHED when we expected it to fail !!! Expect: null Actual: ["aaab", "a"] Type mismatch, expected type object, actual type string Expected value 'null', Actual value '["aaab", "a"]' item 69 REFTEST TEST-UNEXPECTED-FAIL | file:///C:/talos-slave/mozilla-central-w764-opt-u-jsreftest/build/jsreftest/tests/jsreftest.html?test=ecma_3/RegExp/perlstress-002.js | Section 102 of test - regexp = /^(?=(a+?))\1ab/ string = 'aaab' ERROR !!! regexp MATCHED when we expected it to fail !!! Expect: null Actual: ["aaab", "a"] Type mismatch, expected type object, actual type string Expected value 'null', Actual value '["aaab", "a"]' item 70

Although switching to VS2010, this doesn't occur. mark as WFM