[Issue 23520] pragma(inline, false) not applied to nested function declaration

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23520

--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject.org> ---
(In reply to RazvanN from comment #1)
> 1. We can implement the expected behavior by attaching the pragma to the
> declaration, but given the existing machinery in the compiler this will
> require a lot of rework to transform the existing pragma statement into a
> pragma declaration and hook in to the existing implementation.
Why do you think so?

The parser looks like this:
---
if (token.value == TOK.semicolon)
{
    nextToken();
    _body = null;
}
else
    _body = parseStatement(ParseStatementFlags.semi);
s = new AST.PragmaStatement(loc, ident, args, _body);
break;
---

A standalone `pragma(inline);` statement will have no `_body`.  This can be
checked at semantic with no invasive changes.

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