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// DR 1914 - Duplicate standard attributes
// { dg-do compile { target c++11 } }
#define ATTR_NORETURN [[noreturn, noreturn]]
[[noreturn, noreturn]] void fn0(); // { dg-warning "specified multiple times" }
ATTR_NORETURN void fn0a();
[[noreturn]] [[noreturn]] void fn1();
[[deprecated, deprecated]] void fn2(); // { dg-warning "specified multiple times" }
[[deprecated]] [[deprecated]] void fn3();
[[maybe_unused]] [[maybe_unused]] int fn4();
[[maybe_unused, maybe_unused]] int fn5(); // { dg-warning "specified multiple times" }
[[nodiscard]] [[nodiscard]] int fn6();
[[nodiscard, nodiscard]] int fn7(); // { dg-warning "specified multiple times" }
struct E { };
struct A {
[[no_unique_address]] [[no_unique_address]] E e;
};
struct B {
[[no_unique_address, no_unique_address]] E e; // { dg-warning "specified multiple times" }
};
int
f (int n)
{
switch (n)
{
case 1:
[[fallthrough, fallthrough]]; // { dg-warning "specified multiple times" }
case 2:
[[fallthrough]] [[fallthrough]]; // { dg-warning "specified multiple times" }
case 3:
return 15;
}
if (n == 10)
[[likely]] [[likely]] return 42; // { dg-warning "ignoring attribute" }
else if (n == 11)
[[unlikely]] [[unlikely]] return 10; // { dg-warning "ignoring attribute" }
else if (n == 12)
[[likely, likely]] return 42; // { dg-warning "specified multiple times" }
else
[[unlikely, unlikely]] return 0; // { dg-warning "specified multiple times" }
}
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