[Issue 20250] New: Static 64-bit failure

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20250

          Issue ID: 20250
           Summary: Static 64-bit failure
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: svnpenn at gmail.com

Using this file:

    import std.net.curl, std.stdio;
    void main() {
       auto v1 = "http://speedtest.atl.hivelocity.net".get;
       write(v1);
    }

I can compile like this:

    cp curl-7.66.0-win32-mingw/lib/libcurl.a curl-x86.lib
    dmd -m32mscoff app.d curl-x86.lib

However if I try 64-bit:

    cp curl-7.66.0-win64-mingw/lib/libcurl.a curl-x64.lib
    dmd -m64 app.d curl-x64.lib

it fails:

    $ ./app
    std.net.curl.CurlException at std\net\curl.d(4201): Failed to load curl, tried
    "libcurl.dll", "curl.dll".

Same for this:

    dmd -m64 -static app.d curl-x64.lib

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