// Tests for late-specified return type.
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// Tests for late-specified return type.
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// { dg-options "-std=c++0x" }
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// { dg-options "-std=c++0x" }
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auto f() -> int
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auto f() -> int
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{
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{
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return 0;
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return 0;
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}
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}
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template
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template
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auto add(T t, U u) -> decltype (t+u)
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auto add(T t, U u) -> decltype (t+u)
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{
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{
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return t+u;
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return t+u;
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}
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}
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template
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template
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decltype(T()+U()) add2(T t, U u)
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decltype(T()+U()) add2(T t, U u)
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{
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{
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return t+u;
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return t+u;
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}
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}
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template
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template
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U ag (T, U)
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U ag (T, U)
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{
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{
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return U();
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return U();
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}
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}
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template
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template
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auto add3(T t, U u) -> decltype (ag(t,u))
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auto add3(T t, U u) -> decltype (ag(t,u))
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{
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{
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return ag(t,u);
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return ag(t,u);
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}
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}
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template
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template
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decltype(*(T*)0+*(U*)0) add4(T t, U u)
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decltype(*(T*)0+*(U*)0) add4(T t, U u)
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{
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{
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return t+u;
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return t+u;
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}
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}
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template
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template
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struct A
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struct A
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{
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{
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T f() {}
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T f() {}
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template
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template
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T g() {}
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T g() {}
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template
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template
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struct B
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struct B
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{
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{
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int MEM;
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int MEM;
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};
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};
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};
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};
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template
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template
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auto f(T* t) -> decltype (t->f())
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auto f(T* t) -> decltype (t->f())
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{
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{
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return t->f();
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return t->f();
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}
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}
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template
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template
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auto g(T t) -> decltype (t.f())
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auto g(T t) -> decltype (t.f())
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{
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{
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return t.f();
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return t.f();
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}
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}
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template
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template
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auto h(T t, U u) -> decltype (t.template g())
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auto h(T t, U u) -> decltype (t.template g())
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{
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{
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return t.template g();
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return t.template g();
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}
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}
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struct D { };
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struct D { };
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struct C: public A::B
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struct C: public A::B
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{
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{
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};
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};
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template
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template
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auto k(T t, U u, V v) -> decltype (t.U::template B::MEM)
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auto k(T t, U u, V v) -> decltype (t.U::template B::MEM)
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{
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{
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return t.U::template B::MEM;
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return t.U::template B::MEM;
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}
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}
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// For these two examples we can elide the 'decltype' and just mangle the type.
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// For these two examples we can elide the 'decltype' and just mangle the type.
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template
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template
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auto l(T t) -> decltype (t)
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auto l(T t) -> decltype (t)
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{
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{
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return t;
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return t;
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}
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}
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template
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template
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auto m(T t) -> decltype (u)
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auto m(T t) -> decltype (u)
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{
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{
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return t;
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return t;
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}
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}
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A a, *p;
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A a, *p;
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int main()
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int main()
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{
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{
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// { dg-final { scan-assembler "_Z3addIidEDTplfp_fp0_ET_T0_" } }
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// { dg-final { scan-assembler "_Z3addIidEDTplfp_fp0_ET_T0_" } }
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auto i = add(1, 2.0);
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auto i = add(1, 2.0);
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// { dg-final { scan-assembler "_Z4add4IidEDTpldecvPT_Li0EdecvPT0_Li0EES0_S2_" } }
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// { dg-final { scan-assembler "_Z4add4IidEDTpldecvPT_Li0EdecvPT0_Li0EES0_S2_" } }
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auto i4 = add4(1, 2.0);
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auto i4 = add4(1, 2.0);
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// { dg-final { scan-assembler "_Z4add2IidEDTplcvT__EcvT0__EES0_S1_" } }
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// { dg-final { scan-assembler "_Z4add2IidEDTplcvT__EcvT0__EES0_S1_" } }
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auto i2 = add2(1, 2.0);
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auto i2 = add2(1, 2.0);
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// { dg-final { scan-assembler "_Z4add3IidEDTcl2agfp_fp0_EET_T0_" } }
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// { dg-final { scan-assembler "_Z4add3IidEDTcl2agfp_fp0_EET_T0_" } }
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auto i3 = add3(1, 2.0);
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auto i3 = add3(1, 2.0);
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// { dg-final { scan-assembler "_Z1fI1AIiEEDTclptfp_1fEEPT_" } }
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// { dg-final { scan-assembler "_Z1fI1AIiEEDTclptfp_1fEEPT_" } }
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f(p);
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f(p);
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// { dg-final { scan-assembler "_Z1gI1AIiEEDTcldtfp_1fEET_" } }
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// { dg-final { scan-assembler "_Z1gI1AIiEEDTcldtfp_1fEET_" } }
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g(a);
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g(a);
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// { dg-final { scan-assembler "_Z1hI1AIiEdEDTcldtfp_1gIT0_EEET_S2_" } }
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// { dg-final { scan-assembler "_Z1hI1AIiEdEDTcldtfp_1gIT0_EEET_S2_" } }
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h(a,1.0);
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h(a,1.0);
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// { dg-final { scan-assembler "_Z1kI1C1AIiE1DEDtdtfp_srNT0_1BIT1_EE3MEMET_S4_S6_" } }
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// { dg-final { scan-assembler "_Z1kI1C1AIiE1DEDtdtfp_srNT0_1BIT1_EE3MEMET_S4_S6_" } }
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k( C(), A(), D() );
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k( C(), A(), D() );
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// { dg-final { scan-assembler "_Z1lIiET_S0_" } }
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// { dg-final { scan-assembler "_Z1lIiET_S0_" } }
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l(1);
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l(1);
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// { dg-final { scan-assembler "_Z1mIiLi1EET_S0_" } }
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// { dg-final { scan-assembler "_Z1mIiLi1EET_S0_" } }
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m(1);
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m(1);
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}
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}
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