[Issue 2810] Bogus forward reference error with auto function

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http://d.puremagic.com/issues/show_bug.cgi?id=2810


Witold Baryluk <baryluk at smp.if.uj.edu.pl> changed:

           What    |Removed                     |Added
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                 CC|                            |baryluk at smp.if.uj.edu.pl


--- Comment #9 from Witold Baryluk <baryluk at smp.if.uj.edu.pl> 2011-01-02 12:46:04 PST ---
Hi,

I also have similar problem, but involving two modules. Minimal test case (it
also appears when functions are templates, or returns templated classes, or int
type is changed to other type):

/*****************************/
module m2;

auto f(int x) {
   return x;
}

auto g(int x) {
   return f(x);
}
/*****************************/


/*****************************/
module m1;

import m2 : g;

void main() {
   g(5);
}
/*****************************/

It currently depend on the order of files given to the compiler.

# dmd2  m1.d m2.d         # error
m1.d(6): Error: forward reference to g
# dmd2  m2.d m1.d         # works!
#


# dmd2 -c m1.d             # error
m1.d(6): Error: forward reference to g
# dmd2 -c m2.d             # works
#

As one can see there is actually NO forward references here. So I think it is
simpler than co-recursive version of Steven. Bug disappears when function f and
g, are moved to module m1. Or when function g have explicit return type.

It maybe also related to the bug involving order of files on command line to
the compiler.

Thanks.

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