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Add a lint to catch clashing extern fn declarations. #70946

Merged
merged 4 commits into from
Jun 21, 2020
Merged

Add a lint to catch clashing extern fn declarations. #70946

merged 4 commits into from
Jun 21, 2020

Commits on Jun 20, 2020

  1. Add ClashingExternDecl test case.

    @jumbatm
    jumbatm committed Jun 20, 2020
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  2. Add ClashingExternDecl lint. 

    This lint checks that all declarations for extern fns of the same name
are declared with the same types.
    @jumbatm
    jumbatm committed Jun 20, 2020
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  3. Add clashing-extern-fn.rs stderr.

    @jumbatm
    jumbatm committed Jun 20, 2020
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  4. Update existing test cases. 

    - Allow ClashingExternDecl for lint-dead-code-3
- Update test case for rust-lang#5791
- Update test case for rust-lang#1866
- Update extern-abi-from-macro test case
    @jumbatm
    jumbatm committed Jun 20, 2020
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