[Issue 4645] New: to!string(const char*) in library causes Optlink to issue warning

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4645

           Summary: to!string(const char*) in library causes Optlink to
                    issue warning
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Optlink
        AssignedTo: nobody at puremagic.com
        ReportedBy: aldacron at gmail.com


--- Comment #0 from Mike Parker <aldacron at gmail.com> 2010-08-15 03:20:46 PDT ---
Given the following module:

------------------
module tos;

import std.string : to;
import std.stdio : writeln;

void dotos()
{
    const char* str = "Foo";
    writeln(to!string(str));
}
------------------

Compile with:
dmd -lib tos.d

Then take this module:

------------------
module tosmain;

import tos;

void main()
{
    dotos();
}
------------------

And compile with:
dmd tos.lib tosmain.d

The output is the following:

OPTLINK (R) for Win32  Release 8.00.2
Copyright (C) Digital Mars 1989-2009  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
tos.lib
 Warning 140: Library probably needs FIXLIB

However, in my Derelict libraries, I have a utility function that wraps
to!string to convert from a C string to a D string, but this warning is not
given when linking with that lib. I've been unable to reproduce it in a small
test case for comparison, as I keep getting this warning no matter what I do.
Regardless, the output of the program is unaffected.

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