[PATCH] D151320: [clang] Add `// expected-maybe-no-diagnostics` comment to VerifyDiagnosticConsumer

[Vlad Serebrennikov via Phabricator via cfe-commits]

Endill created this revision.
Endill added reviewers: aaron.ballman, hfinkel, dblaikie.
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This patch introduces a `// expected-maybe-not-diagnostic` that silence warnings about missing `// expected-no-diagnostic`, but doesn't conflict with `// expected-error` directives.

I go into details in the Discourse thread <https://discourse.llvm.org/t/rfc-opt-in-way-to-make-verifydiagnosticconsumer-slightly-less-strict/70747> about why we need this, and why we need this in the form implemented.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D151320

Files:
  clang/include/clang/Frontend/VerifyDiagnosticConsumer.h
  clang/lib/Frontend/VerifyDiagnosticConsumer.cpp
  clang/test/Frontend/verify-maybe-no-diagnostics.c

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