https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117504
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Known to work| |7.5.0
Target Milestone|--- |12.5
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Summary|Incorrect code emitted when |[12/13/14/15 Regression]
|using "constexpr |Incorrect code emitted when
|std::array" |using "constexpr
| |std::array"
CC| |ppalka at gcc dot gnu.org
Last reconfirmed| |2024-11-12
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Reduced:
struct span {
#if 1
span(const int (&__first)[1]) : _M_ptr(__first) {}
#else
span(const int* __first) : _M_ptr(__first) {}
#endif
int operator[](long __i) { return _M_ptr[__i]; }
const int *_M_ptr;
};
int main() {
constexpr int a_vec[]{1};
auto vec{[&a_vec]() -> span { return a_vec; }()};
if (vec[0] != 1)
__builtin_abort();
}
Started with r8-3497-g281e6c1d8f1b4c. If we toggle the #if then we instead ICE
from build_address.
