Viewing file:  lambda-attr1.C (1.78 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
// P2173R1 - Attributes on Lambda-Expressions
// { dg-do compile { target c++11 } }
void
foo (bool x, bool y)
{
auto a = [][[noreturn]] () {}; // { dg-warning "'noreturn' function does return" }
if (x)
a ();
auto b = [][[noreturn]] {}; // { dg-warning "'noreturn' function does return" }
if (y)
b ();
auto c = [] [[ deprecated ]] () {}; // { dg-bogus "is deprecated" }
c (); // { dg-warning "'foo\\\(bool, bool\\\)::<lambda\\\(\\\)>' is deprecated" }
auto d = [][[deprecated]] {}; // { dg-bogus "is deprecated" }
d (); // { dg-warning "'foo\\\(bool, bool\\\)::<lambda\\\(\\\)>' is deprecated" }
#if __cpp_generic_lambdas >= 201304
auto e = [] [[deprecated]] (auto x) {}; // { dg-bogus "is deprecated" }
e (0.0); // { dg-warning "'foo\\\(bool, bool\\\)::<lambda\\\(auto:1\\\)>\[^\n\r]*' is deprecated" "" { target c++14 } }
#endif
#if __cpp_generic_lambdas >= 201707
auto f = [] <typename T> [[deprecated]] (T) {}; // { dg-bogus "is deprecated" }
f (1); // { dg-warning "'foo\\\(bool, bool\\\)::<lambda\\\(T\\\)>\[^\n\r]*' is deprecated" "" { target c++20 } }
#endif
auto g = [][[nodiscard]](int) { return 1; };
g (1); // { dg-warning "ignoring return value of 'foo\\\(bool, bool\\\)::<lambda\\\(int\\\)>', declared with attribute 'nodiscard'" }
auto h = [] [[nodiscard]] { return 0; };
h (); // { dg-warning "ignoring return value of 'foo\\\(bool, bool\\\)::<lambda\\\(\\\)>', declared with attribute 'nodiscard'" }
auto i = [] [[ gnu::unavailable ]] () {};
auto j = [][[gnu::unavailable]] {};
#if __cpp_generic_lambdas >= 201304
auto k = [] [[gnu::unavailable]] (auto x) {}; // { dg-bogus "is unavailable" }
#endif
#if __cpp_generic_lambdas >= 201707
auto l = [] <typename T> [[gnu::unavailable]] (T) {}; // { dg-bogus "is unavailable" }
#endif
}
|
