199082 2019-06-20 14:53:10 -0700 Web Inspector: Error "null is not an object (evaluating 'syntaxTree.containersOfPosition')" when setting a breakpoint 2019-06-20 18:22:19 -0700 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build All All RESOLVED FIXED InRadar P2 Normal --- 1 saam hi commit-queue hi inspector-bugzilla-changes mattbaker webkit-bug-importer oldest_to_newest 1546669 0 372587 saam 2019-06-20 14:53:10 -0700 Created attachment 372587 test case This is happening to me on r246642 using a debug build. Attaching html test case here. (If you use a debug build, you'll need to wait until I land https://bugs.webkit.org/show_bug.cgi?id=198775 to have the WHLSL program not crash). Repro steps: 1. Set a breakpoint on the line: "const shaderModule = device.createShaderModule({code: shaderSource, isWHLSL: true});" 2. reload the page 3. breakpoint will hit, then shortly, inspector will hit this error 1546670 1 saam 2019-06-20 14:53:58 -0700 stack trace shown in inspector: null is not an object (evaluating 'syntaxTree.containersOfPosition')​ (at SourceCodeTextEditor.js:​1443:​35)​ ?​ @ SourceCodeTextEditor.js:​1443:​35 makeSyntaxTreeAndCallCallback @ Script.js:​212:​21 ?​ @ Script.js:​226:​42 promiseReactionJob @ [native code]​ 1546677 2 372589 hi 2019-06-20 15:09:45 -0700 Created attachment 372589 Patch 1546715 3 372589 mattbaker 2019-06-20 15:54:08 -0700 Comment on attachment 372589 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=372589&action=review rs=me > Source/WebInspectorUI/ChangeLog:10 > + The script syntax tree may be fetched even if the resources hasn't finished parsing (or had Nit: either "resource" or "resources haven't" 1546763 4 372603 hi 2019-06-20 17:49:17 -0700 Created attachment 372603 Patch 1546774 5 commit-queue 2019-06-20 18:20:29 -0700 The commit-queue encountered the following flaky tests while processing attachment 372603: imported/w3c/web-platform-tests/content-security-policy/reporting/report-multiple-violations-02.html bug 199095 (author: dbates@webkit.org) fetch/fetch-worker-crash.html bug 187257 (author: youennf@gmail.com) The commit-queue is continuing to process your patch. 1546776 6 372603 commit-queue 2019-06-20 18:21:14 -0700 Comment on attachment 372603 Patch Clearing flags on attachment: 372603 Committed r246667: <https://trac.webkit.org/changeset/246667> 1546777 7 commit-queue 2019-06-20 18:21:17 -0700 All reviewed patches have been landed. Closing bug. 1546779 8 webkit-bug-importer 2019-06-20 18:22:19 -0700 <rdar://problem/51969446> 372587 2019-06-20 14:53:10 -0700 2019-06-20 14:53:10 -0700 test case whlsl-use-undefined-variable.html text/html 3101 saam PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KPHNjcmlwdCBzcmM9Ii4uL3Jlc291cmNlcy9q cy10ZXN0LXByZS5qcyI+PC9zY3JpcHQ+CjwvaGVhZD4KPGJvZHk+CjxzY3JpcHQ+CmNvbnN0IHNo YWRlclNvdXJjZSA9IGAKW251bXRocmVhZHMoMSwgMSwgMSldCmNvbXB1dGUgdm9pZCBjb21wdXRl U2hhZGVyKGRldmljZSBmbG9hdFtdIGJ1ZmZlciA6IHJlZ2lzdGVyKHUwKSwgZmxvYXQzIHRocmVh ZElEIDogU1ZfRGlzcGF0Y2hUaHJlYWRJRCkgewogICAgZmxvYXQgZm9vOwogICAgaWYgKGZvbykg ewogICAgICAgIHggPSB4ICsgMTsKICAgIH0KfQpgOwpsZXQgcmVzdWx0c0Zsb2F0MzJBcnJheTsK YXN5bmMgZnVuY3Rpb24gc3RhcnQoKSB7CiAgICBjb25zdCBhZGFwdGVyID0gYXdhaXQgbmF2aWdh dG9yLmdwdS5yZXF1ZXN0QWRhcHRlcigpOwogICAgY29uc3QgZGV2aWNlID0gYXdhaXQgYWRhcHRl ci5yZXF1ZXN0RGV2aWNlKCk7CgogICAgY29uc3Qgc2hhZGVyTW9kdWxlID0gZGV2aWNlLmNyZWF0 ZVNoYWRlck1vZHVsZSh7Y29kZTogc2hhZGVyU291cmNlLCBpc1dITFNMOiB0cnVlfSk7CiAgICBj 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