[PATCH] D130150: [pseudo] Eliminate multiple-specified-types ambiguities in the grammar.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
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Motivating case: `foo bar;` is not a declaration of nothing with `foo` and `bar`
both types.

This is a common and critical ambiguity, and I expect eliminating it in the
grammar is more efficient than using guards (without caching).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130150

Files:
  clang-tools-extra/pseudo/lib/cxx/cxx.bnf
  clang-tools-extra/pseudo/test/cxx/decl-specifier-seq.cpp
  clang-tools-extra/pseudo/test/glr.cpp

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