• Jean-Louis Leroy (16/16) Apr 27 2020 import std.traits;
• RazvanN (6/23) Apr 28 2020 Yes, this is a parser bug. `unittest` isn't important here (you
• RazvanN (3/11) Apr 28 2020 I forgot about the UDA. It looks like the parser expects a type
• Basile B. (3/15) Apr 28 2020 in parser.d, isParameters() does not check the attributes.

Jean-Louis Leroy <jl leroy.nyc> writes:

import std.traits;

unittest
{
   struct attr;
   void foo() {}
   ReturnType!foo bar(int a) {}
   void baz( attr int a) {}
   ReturnType!foo blah( attr int a) {}
}

dmd -c -unittest bug.d
bug.d(9): Error: found `blah` when expecting `;` following 
statement
bug.d(10): Error: found `}` when expecting `;` following statement
bug.d(11): Error: found `End of File` when expecting `}` 
following compound statement

This goes away if I remove `unittest { }`.

RazvanN <razvan.nitu1305 gmail.com> writes:

On Monday, 27 April 2020 at 22:48:46 UTC, Jean-Louis Leroy wrote:
 import std.traits;

 unittest
 {
   struct attr;
   void foo() {}
   ReturnType!foo bar(int a) {}
   void baz( attr int a) {}
   ReturnType!foo blah( attr int a) {}
 }

 dmd -c -unittest bug.d
 bug.d(9): Error: found `blah` when expecting `;` following 
 statement
 bug.d(10): Error: found `}` when expecting `;` following 
 statement
 bug.d(11): Error: found `End of File` when expecting `}` 
 following compound statement

 This goes away if I remove `unittest { }`.

Yes, this is a parser bug. `unittest` isn't important here (you 
can replace unittest with a function declaration and the behavior 
will be the same), it's the fact that you are declaring a nested 
function which returns a template instance  that confuses the 
parser. Please file this on bugzilla.

RazvanN <razvan.nitu1305 gmail.com> writes:

On Tuesday, 28 April 2020 at 07:41:28 UTC, RazvanN wrote:
 On Monday, 27 April 2020 at 22:48:46 UTC, Jean-Louis Leroy 
 wrote:
 [...]

 Yes, this is a parser bug. `unittest` isn't important here (you 
 can replace unittest with a function declaration and the 
 behavior will be the same), it's the fact that you are 
 declaring a nested function which returns a template instance  
 that confuses the parser. Please file this on bugzilla.

I forgot about the UDA. It looks like the parser expects a type 
after the `(` and discovering the UDA makes it error.

Basile B. <b2.temp gmx.com> writes:

On Tuesday, 28 April 2020 at 07:43:13 UTC, RazvanN wrote:
 On Tuesday, 28 April 2020 at 07:41:28 UTC, RazvanN wrote:
 On Monday, 27 April 2020 at 22:48:46 UTC, Jean-Louis Leroy 
 wrote:
 [...]

 Yes, this is a parser bug. `unittest` isn't important here 
 (you can replace unittest with a function declaration and the 
 behavior will be the same), it's the fact that you are 
 declaring a nested function which returns a template instance  
 that confuses the parser. Please file this on bugzilla.

 I forgot about the UDA. It looks like the parser expects a type 
 after the `(` and discovering the UDA makes it error.

in parser.d, isParameters() does not check the attributes.
issue + patch : https://issues.dlang.org/show_bug.cgi?id=20780