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// { dg-do compile }
// { dg-options "-std=c++2a -fcontracts" }
struct Foo {
virtual int f0(int n) [[ pre: false ]] { return n; }
virtual int f1(int n) [[ pre: false ]] { return n; }
virtual int f2(int n) [[ pre: false ]] { return n; }
virtual int f3(int n) [[ pre: false ]] { return n; }
virtual int f4(int n) [[ pre: false ]] { return n; }
virtual int f5(int n) [[ pre: false ]] { return n; }
virtual int f6(int n) [[ pre: false ]] { return n; }
virtual int f7(int n) [[ pre: false ]] { return n; }
virtual int f8(int n) [[ pre: false ]] { return n; }
virtual int f9(int n) [[ pre: false ]] { return n; }
virtual int f10(int n) [[ pre: false ]] { return n; }
virtual int f11(int n) [[ pre: n > 0 ]] [[ pre: n > 1 ]] { return n; }
virtual int f12(int n) [[ pre: n > 0 ]] [[ pre: n > 1 ]] { return n; }
};
struct Bar : Foo {
[[ pre: n > -1 ]] int f0(int n = 0) override { return -n; } // { dg-error "contracts must appertain" }
int [[ pre: n > -2 ]] f1(int n = 0) override { return -n; } // { dg-error "contracts must appertain" }
int f2 [[ pre: n > -3 ]] (int n = 0) override { return -n; } // { dg-error "contracts must appertain" }
int f4([[ pre: n > -4 ]] int n = 0) override { return -n; } // { dg-error "contracts must appertain" }
int f5(int [[ pre: n > -5 ]] n = 0) override { return -n; } // { dg-error "contracts must appertain" }
int f6(int n [[ pre: n > -6 ]] = 0) override { return -n; } // { dg-error "contracts must appertain" }
int f7(int n = [[ pre: n > -7 ]] 0) override { return -n; }
// { dg-error "expected identifier" "" { target *-*-* } .-1 }
// { dg-error "expected .\{. before numeric" "" { target *-*-* } .-2 }
// { dg-error "invalid user-defined conversion" "" { target *-*-* } .-3 }
// { dg-error "expected .,." "" { target *-*-* } .-4 }
int f8(int n = 0 [[ pre: n > -8 ]]) override { return -n; }
// { dg-error "shall only introduce an attribute" "" { target *-*-* } .-1 }
int f9(int n = 0) [[ pre: n > -9 ]] override { return -n; } // { dg-error "mismatched contract" }
// The grammar doesn't appear to permit contracts after the virt-specifiers
// but the parser will happily add these to an attribute list that is not
// owned by the function declarator.
int f10(int n = 0) override [[ pre: n > -10 ]] { return -n; } // { dg-error "contracts must appertain" }
int f11(int n) [[ pre: n > 1 ]] override [[ pre: n > 0 ]] { return -n; } // { dg-error "contracts must appertain" }
int f12(int n) [[ pre: n > 0 ]] override [[ pre: n > 1 ]] { return -n; } // { dg-error "contracts must appertain" }
};
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