https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104803
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
clang does a better job of explaining though:
<source>:6:17: error: call to consteval function '(anonymous
class)::operator()' is not a constant expression
if (p(i)) { // <== line 5
^
<source>:19:15: note: in instantiation of function template specialization
'none_of<const int (&)[3], (lambda at <source>:20:5)>' requested here
static_assert(none_of(vals,
^
<source>:6:19: note: read of non-const variable 'i' is not allowed in a
constant expression
if (p(i)) { // <== line 5
^
<source>:4:14: note: declared here
for (int i : r) {
^
<source>:10:17: error: call to consteval function '(anonymous
class)::operator()' is not a constant expression
if (p(i)) { // <== line 9
^
<source>:10:19: note: read of non-const variable 'i' is not allowed in a
constant expression
if (p(i)) { // <== line 9
^
<source>:4:14: note: declared here
for (int i : r) {
^
