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From: "danakj at orodu dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/103760] Invalid expression inside lambda inside compound
 requirement causes an error instead of concept satisfaction failure
Date: Tue, 13 Jun 2023 01:49:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103760

danakj at orodu dot net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |danakj at orodu dot net

--- Comment #7 from danakj at orodu dot net ---
MSVC and Clang both accept this code, which GCC rejects. Is it the same iss=
ue
and GCC is compliant here?

```
#include <concepts>

template <class T>
concept C =3D requires() {
    {
        [](T t) constexpr { t.foo(1); }()
    };
};

void bad_call(const char*);

struct Foo {
    consteval void foo(int i) {
        if (i > 0) {
            bad_call("positive_value");
        }
    }
};

static_assert(!C<Foo>);
```

https://godbolt.org/z/bdrPve4rT=