[Mono-bugs] [Bug 720031] New: gmcs "error CS0584: Internal compiler error", csc works.

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https://bugzilla.novell.com/show_bug.cgi?id=720031

https://bugzilla.novell.com/show_bug.cgi?id=720031#c0


           Summary: gmcs "error CS0584: Internal compiler error", csc
                    works.
    Classification: Mono
           Product: Mono: Compilers
           Version: 2.10.x
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: C#
        AssignedTo: michael.miller at suse.com
        ReportedBy: htl10 at users.sourceforge.net
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.2 (KHTML,
like Gecko) Chrome/15.0.874.21 Safari/535.2

same machine, csc under wine works, gmcs with the equivalent command line (and
same source file and 3rd party DLLs), throws internal compiler error:

gmcs -debug+  -lib:... -r:<3rdpartydll> -target:exe -out:bin/Debug/Mycode.exe
Mycode.cs

Mycode.cs(73,24): error CS0584: Internal compiler error: Method not found:
'3rdpartyClass.somepublicMethod'.
Mycode.cs(73,17): error CS0266: Cannot implicitly convert type `object' to
`3rdpartyClass'. An explicit conversion exists (are you missing a cast?)
Compilation failed: 2 error(s), 0 warnings

The line concerned is just:

  3rdpartyClass myinstance = new 3rdpartyClass();

It tooks me a few hours wondering what's wrong with my code (the line is a
small set of new addition to an existing project which has been working fine
with gmcs for years), until I tried with csc and it worked - and gmcs still
does not.

I have an equivalent nmake/csc-based makefile which I keep in sync with GNU
make/gmcs .

Reproducible: Always

Steps to Reproduce:
1. compile code under gmcs (type make) - 
2. 
3.
Actual Results:  
internal compiler error

Expected Results:  
finishes compilation just like csc.

My code is alright but the 3rd party dll is proprietary - I am willing to try
anything including build from git, if necessary.

Since csc works and gmcs does not (and this is one a small addition to an
existing project which has been working with both for years), and an internal
compiler error is serious, I guess this is of "Major" Severity, although please
feel free to downrate it back to normal.

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