nridge added a comment.
Sorry, that was a bad example as it's not actually valid. Here's a slightly
modified one:
template <bool,int>
class a {};
constexpr int b = 2;
constexpr int c = 3;
constexpr int d = 4;
a<b<c,d> e;
The parser knows the first `<` opens a template-param-list because the name
before it, `a`, resolves to a template-name, and that the second `<` is a
comparison operator because the name before //that//, `b`, does not.
But a native client-side matcher might incorrectly pick the second `<` as the
opening angle-bracket to match the `>`.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D139926/new/
https://reviews.llvm.org/D139926
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