File: test16574.d

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (34 lines) | stat: -rw-r--r-- 775 bytes parent folder | download | duplicates (7) 
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
 
// https://issues.dlang.org/show_bug.cgi?id=16574
template Recursive(T) if (is(T == class))
{
    // fails because T is still forward referenced
    // speculative determineSize must not set type to error
    static assert (!__traits(compiles, { new T; }));
    // known size of class
    static assert (is(typeof(T.init) == T));

    alias Recursive = T;
}

// must be resolvable
class C
{
    Recursive!C r;
}

template Recursive(T) if (is(T == struct))
{
    // fails because T is still forward referenced
    // speculative determineSize must not set type to error
    static assert (!__traits(compiles, { T t; }));
    // no size yet for struct
    static assert (!is(typeof(T.init)));

    alias Recursive = T*;
}

// must be resolvable
struct S
{
    Recursive!S r;
}