Viewing file:  nodiscard9.C (1.06 KB) -rw-r--r--
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// PR c++/100666
// { dg-do compile { target c++11 } }
struct S {};
[[nodiscard]] S bar ();
struct U { S s; };
[[nodiscard]] U corge ();
extern void foo (...);
template <typename T> void qux (T);
void
baz ()
{
foo (bar ()); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
bar (); // { dg-warning "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
auto x = bar (); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
qux (bar ()); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
foo (corge ()); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
corge (); // { dg-warning "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
auto y = corge (); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
qux (corge ()); // { dg-bogus "ignoring return value of '\[^\n\r]*', declared with attribute 'nodiscard'" }
}
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