File: implicit7.C

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (37 lines) | stat: -rw-r--r-- 580 bytes parent folder | download | duplicates (10) 
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
 
// PR c++/44909
// { dg-do compile { target c++11 } }
// Declaring A<D<E>>'s copy ctor means choosing a ctor to initialize D<E>,
// which means choosing a ctor for C<B<E>>, which meant considering
// C(const B<E>&) which means choosing a ctor for B<E>, which means choosing
// a ctor for A<D<E>>.  Cycle.

template<typename T>
struct A
{
  T t;
};

template <typename T>
struct B
{
  typename T::U u;
};

template <typename T>
struct C
{
  C(const T&);
};

template <typename T>
struct D
{
  C<B<T> > v;
};

struct E {
  typedef A<D<E> > U;
};

extern A<D<E> > a;
A<D<E> > a2(a);