https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115617
Bug ID: 115617
Summary: Wrong diagnostic message for non-const expr in
constexpr context
Product: gcc
Version: 13.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jengelh at inai dot de
Target Milestone: ---
Input:
enum E { FOO = 2 };
int main()
{
static constexpr auto x = reinterpret_cast<void *>(static_cast<long>(FOO));
static constexpr auto y = reinterpret_cast<void *>(static_cast<long>(2));
}
Observed output:
$ g++ -c x.cpp -Wall -std=c++17
x.cpp: In function ‘int main()’:
x.cpp:4:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression
x.cpp:5:29: error: ‘reinterpret_cast’ from integer to pointer
Expected output:
x.cpp: In function ‘int main()’:
x.cpp:4:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression
x.cpp:5:29: error: ‘reinterpret_cast<void*>(2)’ is not a constant expression
