[PATCH] D124915: Check for resource exhaustion when recursively parsing declarators

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added a comment.

Two things to note:

1. I'm not convinced that adding a test case is the right thing to do here. On the one hand, we want to verify that we now emit the diagnostic before crashing. But on the other hand, this test is extremely expensive to run (because it exhausts the stack) and its behavior is highly specific to the test platform its being run on. If someone asked me to remove the test coverage here, I would not be sad.
2. The `runWithSufficientStackSpace()` implementation is a copy of what's already in Sema. I investigated lifting this interface to something more common, but the issue is with generating a diagnostic (there's no common diagnostic engine between `Sema` and `Parser` that I could find). Given the simplicity of the implementation, I figured it's reasonably defensible to duplicate the code.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D124915/new/

https://reviews.llvm.org/D124915