Clang assertion failure in paren init in new expression

[usx95]

GCC: g++.dg/cpp2a/paren-init20.C

struct A {
    int a;
    int b;
};

void foo() {
    auto z = new A(0, {0});
}

https://godbolt.org/z/W6aMaE8fo

[llvmbot]

@llvm/issue-subscribers-c-20

[llvmbot]

@llvm/issue-subscribers-clang-frontend

[shafik]

This looks like a relatively recent regression I wonder if @alanzhao1 recent changes might be involved.

[alanzhao1]

Candidate patch: https://reviews.llvm.org/D151763

[alanzhao1]

Reopening so this can be backported to 16.x