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// { dg-do compile }
// { dg-options "-std=c++2b" }
int qux ();
constexpr int
foo (int x)
{
switch (x)
{
static int v = qux ();
case 12:
return 1;
}
return 0;
}
constexpr int
bar (int x)
{
switch (x)
{
thread_local int v = qux ();
case 12:
return 1;
}
return 0;
}
constexpr int
baz (int x)
{
switch (x)
{
static const int v = qux (); // { dg-message "'v' was not initialized with a constant expression" }
case 12:
return v; // { dg-error "the value of 'v' is not usable in a constant expression" }
}
return 0;
}
constexpr int
corge (int x)
{
switch (x)
{
const thread_local int v = qux (); // { dg-message "'v' was not initialized with a constant expression" }
case 12:
return v; // { dg-error "the value of 'v' is not usable in a constant expression" }
}
return 0;
}
constexpr int a = foo (12);
constexpr int b = bar (12);
constexpr int c = baz (12);
constexpr int d = corge (12);
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