Julian Lettner 105e4ad592 [TSan] Add positive test for TSan + Dispatch on Linux ...

1) Enable tests that use `import Dispatch` on Linux. Add substitution
   `%import-libdispatch` that needs to be used for all cross-platform
   tests (i.e., tests that are intended to be run on other platforms
   than Darwin) that do `import Dispatch` or enable thread sanitizer.

2) Make sure as many existing Dispatch and TSan tests as possible run on
   Linux. Mark tests that would require substantial work with
   `UNSUPPORTED: OS=linux-gnu`.

3) Add integration-style Swift test that shows that TSan finds a simple
   race when using `Dispatch.async` incorrectly. A more complete test
   suite for TSan's libdispatch support lives on the LLVM/compiler-rt
   side.

rdar://problem/49177535

2019-06-10 14:24:53 -07:00

1.1 KiB

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