forked from OSchip/llvm-project
99 lines
3.1 KiB
C++
99 lines
3.1 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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void f(int i);
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void f(int i = 0); // expected-note {{previous definition is here}}
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void f(int i = 17); // expected-error {{redefinition of default argument}}
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void g(int i, int j, int k = 3);
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void g(int i, int j = 2, int k);
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void g(int i = 1, int j, int k);
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void h(int i, int j = 2, int k = 3,
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int l, // expected-error {{missing default argument on parameter 'l'}}
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int, // expected-error {{missing default argument on parameter}}
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int n);// expected-error {{missing default argument on parameter 'n'}}
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struct S { } s;
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void i(int = s) { } // expected-error {{no viable conversion}} \
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// expected-note{{passing argument to parameter here}}
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struct X {
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X(int);
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};
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void j(X x = 17); // expected-note{{'::j' declared here}}
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struct Y { // expected-note 2{{candidate constructor (the implicit copy constructor) not viable}}
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#if __cplusplus >= 201103L // C++11 or later
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// expected-note@-2 2 {{candidate constructor (the implicit move constructor) not viable}}
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#endif
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explicit Y(int); // expected-note 2{{explicit constructor is not a candidate}}
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};
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void k(Y y = 17); // expected-error{{no viable conversion}} \
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// expected-note{{passing argument to parameter 'y' here}}
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void kk(Y = 17); // expected-error{{no viable conversion}} \
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// expected-note{{passing argument to parameter here}}
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int l () {
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int m(int i, int j, int k = 3);
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if (1)
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{
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int m(int i, int j = 2, int k = 4);
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m(8);
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}
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return 0;
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}
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int i () {
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void j (int f = 4);
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{
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void j (int f);
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j(); // expected-error{{too few arguments to function call, expected 1, have 0; did you mean '::j'?}}
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}
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void jj (int f = 4);
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{
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void jj (int f); // expected-note{{'jj' declared here}}
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jj(); // expected-error{{too few arguments to function call, single argument 'f' was not specified}}
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}
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}
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int i2() {
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void j(int f = 4); // expected-note{{'j' declared here}}
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{
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j(2, 3); // expected-error{{too many arguments to function call, expected at most single argument 'f', have 2}}
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}
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}
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int pr20055_f(int x = 0, int y = UNDEFINED); // expected-error{{use of undeclared identifier}}
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int pr20055_v = pr20055_f(0);
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void PR20769() { void PR20769(int = 1); }
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void PR20769(int = 2);
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void PR20769_b(int = 1);
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void PR20769_b() { void PR20769_b(int = 2); }
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#if __cplusplus >= 201103L
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template<typename T> constexpr int f1() { return 0; }
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// This is OK, but in order to see that we must instantiate f<int>, despite it
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// being in an unused default argument.
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void g1(char c = {f1<int>()}) {} // expected-warning {{braces around scalar}}
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// This is formally ill-formed, but we choose to not trigger instantiation here
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// (at least, not until g2 is actually called in a way that uses the default
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// argument).
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template<typename T> int f2() { return T::error; }
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void g2(int c = f2<int>()) {}
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// FIXME: Provide a note pointing at the first use of the default argument?
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template<typename T> int f3() { return T::error; } // expected-error {{no members}}
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void g3(int c = f3<int>()) {} // expected-note {{in instantiation of}}
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void use_g3() { g3(); }
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#endif
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