[Bug c++/106485] Can't use heap pointer in `static_assert`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106485
Andrew Pinski changed:
What|Removed |Added
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Andrew Pinski ---
Oh wait there comment #0 is still invalid (undefined?) code:
```
struct I {
int* i = new int{1};
constexpr ~I() { delete i; }
};
static_assert([] ()consteval { return I{}.i != 0; }());
```
Works just fine.
So yes this again is the same issue of static_assert not being immediate
function context.
[Bug c++/106485] Can't use heap pointer in `static_assert`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106485
Andrew Pinski changed:
What|Removed |Added
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed||2023-01-19
--- Comment #3 from Andrew Pinski ---
I think comment #0 is a different issue from comment #2 really.
comment #0 has a temporary while comment #2 has an consteval.
Also GCC accepts this just fine though:
#include
static_assert(!std::string{"abcdegf"}.empty());
[Bug c++/106485] Can't use heap pointer in `static_assert`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106485
--- Comment #2 from Johel Ernesto Guerrero Peña ---
I think that's different. Actually, I think it's Clang that's wrong. As
mentioned at
https://cpplang.slack.com/archives/C21PKDHSL/p1656857369259539?thread_ts=1656856509.892079&cid=C21PKDHSL:
> The expression of the `static_assert` is not an
> [immediate function
> context](https://eel.is/c++draft/expr.const#def:immediate_function_context).
> Wrapping it in `[]() consteval { return s().empty(); }()`
> [works](https://godbolt.org/z/PKTE7zofW),
> whereas removing that `consteval` causes Clang to also complain.
See https://godbolt.org/z/4GMxo13vv.
```C++
#include
consteval auto s() { return std::string(); }
static_assert(s().empty()); // Only Clang accepts.
// static_assert([]() consteval { return s().empty(); }()); // All accept.
// static_assert([]() { return s().empty(); }()); // All reject.
```
Opened https://github.com/llvm/llvm-project/issues/57627 for that.
[Bug c++/106485] Can't use heap pointer in `static_assert`
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106485 Andrew Pinski changed: What|Removed |Added See Also||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=105826 --- Comment #1 from Andrew Pinski --- I think this is a dup of bug 105826.
