ICE on clang: Assertion `!Calls.empty() && "Missing lambda call operator!"' #138018
Description
clang HEAD from a couple hours ago ([email protected]:llvm/llvm-project e79d8f6) crashes:
Originally posted by @jcelerier in #136635
Reduced:
struct foo { };
template <typename T>
struct vec { };
auto structure_to_typelist(const auto& s) noexcept {
return []<template <typename...> typename T, typename... Args>(T<Args...>) {
return 0;
}(vec<int>{});
}
template <typename T>
using helper2 = decltype(structure_to_typelist(T{}));
auto tl_ok2 = helper2<foo>{};