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// P2242R3
// { dg-do compile }
// { dg-options "-std=c++2b" }
constexpr int
foo ()
{
goto lab; // { dg-error "'goto' is not a constant expression" }
lab:
return 1;
}
constexpr int
bar ()
{
static int a; // { dg-error "'a' defined 'static' in 'constexpr' context" }
return ++a;
}
constexpr int
baz ()
{
thread_local int a; // { dg-error "'a' defined 'thread_local' in 'constexpr' context" }
return ++a;
}
// In C++23, we get errors about the non-constant expressions only if we
// actually call the functions in a constexpr context.
void
test ()
{
constexpr int a = foo (); // { dg-error "constant expression" }
constexpr int b = bar (); // { dg-error "constant expression" }
constexpr int c = baz (); // { dg-error "constant expression" }
}
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