runtime: implement synctest - #5649
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Add the synctest ABI and testing integration. Track bubble tasks across all schedulers. Add fake time, timer and channel ownership, durable blocking, and sync integration. Keep synctest paths out of programs that do not call Run, and retain the futex fast path for WaitGroups outside bubbles. Run supported upstream synctest tests and the encoding/json regression from the standard library test targets. Update compiler output and binary size baselines for the runtime layout changes.
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CI failure is expected without #5550 |
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This ports synctest over to tinygo, with support for all platforms/schedulers. This should get
encoding/jsonand others mostly working, though the synctest users have other problems (like missing some reflect stuff).I've done some special logic to make synctest stuff not included when
synctest.Runis not called, since otherwise the binary gets big. It's really only needed in tests.