Compiler version: DMD64 D Compiler v2.058 on 64-bit Linux
The following code causes compiler errors:
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struct Boo(size_t dim){int a;}
struct Baa(size_t dim){Boo!dim a;}
//struct Baa(size_t dim){Boo!1 a;} //(1) This version causes no errors
auto foo()(Boo!1 b){return b;}
//auto fuu(Boo!1 b){return b;} //(2) This line neutralizes the error
void main()
{
Baa!1 a; //(3) This line causes the error message
Baa!2 a1;
auto b = foo(Boo!1(1));
}
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Error messages:
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test.d(12): Error: template test.foo() does not match any function template declaration
test.d(12): Error: template test.foo() cannot deduce template function from argument types !()(Boo!(1LU))
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These errors occure only if there is line markes as (3).
If the definition of `Baa` is changed with the one marked as (1) there is no errors.
If there is line marked as (2) there is no errors (even though the function `fuu` is not used anywhere).