================
@@ -512,24 +512,31 @@ namespace LambdaInDefaultMemberInitializer {
}
#if __cplusplus >= 201703L
-namespace GH35052 {
-template <typename F> constexpr int func(F f) {
- if constexpr (f(1UL)) {
- return 1;
+namespace local_recursive_lambda {
+
+template <typename F> struct recursive_lambda {
+ template <typename... Args> auto operator()(Args &&...args) const {
+ return fn(*this, args...);
}
- return 0;
-}
+ F fn;
+};
-int main() {
- auto predicate = [](auto v) /*implicit constexpr*/ -> bool {
- return v == 1;
- };
+template <typename F> recursive_lambda(F) -> recursive_lambda<F>;
+
+struct Tree {
+ Tree *left, *right;
+};
+
+int sumSize(Tree *tree) {
+ auto accumulate =
+ recursive_lambda{[&](auto &self_fn, Tree *element_node) -> int {
+ return 1 + self_fn(tree->left) + self_fn(tree->right);
+ }};
- static_assert(predicate(1));
- return func(predicate);
+ return accumulate(tree);
}
-} // namespace GH35052
+} // namespace local_recursive_lambda
----------------
cor3ntin wrote:
Can we leave a reference to the issue here? (also that test can be simplified)
https://github.com/llvm/llvm-project/pull/98991
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