https://bugs.llvm.org/show_bug.cgi?id=39192
Bug ID: 39192
Summary: Recursive concept leads to compiler ICE.
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: brycelelb...@gmail.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
Defining a concept that recursively uses itself leads to a compiler ICE with
the experimental Clang concepts branch.
https://godbolt.org/z/4vRxyS
A repro is as follows:
template <typename T>
struct deferred_X;
template <typename T>
concept X = deferred_X<T>::template value<T>;
template <typename T>
struct deferred_X {
template <X U>
static constexpr bool value = true;
};
template <X> struct A{};
A<int> a;
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