File: typename-specifier-3.cpp

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (76 lines) | stat: -rw-r--r-- 1,948 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
// RUN: %clang_cc1 -fsyntax-only -verify %s

// PR4364
template<class T> struct a { // expected-note {{here}}
  T b() {
    return typename T::x();
  }
};
struct B {
  typedef B x;
};
B c() {
  a<B> x;
  return x.b();
}

// Some extra tests for invalid cases
template<class T> struct test2 { T b() { return typename T::a; } }; // expected-error{{expected '(' for function-style cast or type construction}}
template<class T> struct test3 { T b() { return typename a; } }; // expected-error{{expected a qualified name after 'typename'}}
template<class T> struct test4 { T b() { return typename ::a; } }; // expected-error{{refers to non-type member}} expected-error{{expected '(' for function-style cast or type construction}}

// PR12884
namespace PR12884_original {
  template <typename T> struct A {
    struct B {
      template <typename U> struct X {};
      typedef int arg;
    };
    struct C {
      typedef B::X<typename B::arg> x; // expected-error {{missing 'typename'}}
    };
  };

  template <> struct A<int>::B {
    template <int N> struct X {};
    static const int arg = 0;
  };

  A<int>::C::x a;
}
namespace PR12884_half_fixed {
  template <typename T> struct A {
    struct B {
      template <typename U> struct X {};
      typedef int arg;
    };
    struct C {
      typedef typename B::X<typename B::arg> x; // expected-error {{use 'template'}} expected-error {{refers to non-type}}
    };
  };

  template <> struct A<int>::B {
    template <int N> struct X {};
    static const int arg = 0; // expected-note {{here}}
  };

  A<int>::C::x a; // expected-note {{here}}
}
namespace PR12884_fixed {
  template <typename T> struct A {
    struct B {
      template <typename U> struct X {};
      typedef int arg;
    };
    struct C {
      typedef typename B::template X<B::arg> x;
    };
  };

  template <> struct A<int>::B {
    template <int N> struct X {};
    static const int arg = 0;
  };

  A<int>::C::x a; // ok
}