HerrCai0907 added a comment.
I cannot find an example that throw `error: expression contains unexpanded
parameter pack 'T'` in fold expression because code like ` (foo<T>(10 +
(static_cast<U>(1))) + ...);` can be unpack both `T` and `U` in same `...`
operator
But this code can be diagnosed correctly
template <typename... U> struct A {
template <typename... T> void foo(T &&...Params) {
(foo<T>(1 + (static_cast<U>(1))) + ...); // ok
// error: expression contains unexpanded parameter pack 'T'
foo<T>((... + static_cast<U>(1)));
(foo<T>((... + static_cast<U>(1))) + ...); // ok
}
};
Should I add this case into test?
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D145892/new/
https://reviews.llvm.org/D145892
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