[Issue 17703] __traits(compiles, AssignmentExpression) no longer compiles without surrounding parens

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17703

Martin Nowak <code at dawg.eu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |code at dawg.eu
           Severity|regression                  |normal

--- Comment #1 from Martin Nowak <code at dawg.eu> ---
Looks like the assignment expression parsing isn't fully working, below example
works.

void works(int a, int b)
{
    static assert(__traits(compiles, a = b));
}

Also the specs support the case
http://dlang.org/spec/grammar.html#TraitsArgument

I went back until 2.050 and it still wouldn't accept the code, downgrading to a
normal bug.

Simple workaround:

  __traits(compiles, { exp; })

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