http://d.puremagic.com/issues/show_bug.cgi?id=10942

           Summary: ICE on 1087+ initializers (Internal error:
                    backend\cgcv.c 203)
           Product: D
           Version: D2
          Platform: All
        OS/Version: Windows
            Status: NEW
          Keywords: ice
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: andrej.mitrovich@gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich@gmail.com> 2013-09-01 13:41:25 PDT ---
Testing in 2.064 git-head:

-----
import std.string;

string getEnum(size_t count)
{
    string en;
    en ~= "enum KeyCode\n {    \n";

    foreach (i; 0 .. count)
    {
        en ~= format("    memb_%s = %s,\n", i+1, i+1);
    }

    en ~= "} ";
    return en;
}

// Linker warning: Warning 161: Unknown CV version, ignored
// mixin(getEnum(1024));

// ICE // mixin(getEnum(1087));

void main() { }
-----

Uncomment the first mixin to start getting linker warnings. Uncomment the second one instead and an ICE is emitted:

Internal error: backend\cgcv.c 203

I ran into this while translating keycodes from another GUI library. It has just over 1100 keycodes, and I wanted to put them all in one KeyCode enum.

I can also recreate this with structs and classes, so it's not specific to enums (e.g. a struct with 1087 'static' fields). The workaround is to make the keycodes all manifest constants, e.g.:

-----
enum memb_1 = 1;
enum memb_2 = 2;
enum memb_3 = 3;
...
-----

However this does lose me the ability to give the keycodes a single type to group them under.

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--- Comment #1 from Kenji Hara <k.hara.pg@gmail.com> 2013-10-01 19:30:25 PDT ---
To reproduce errors, -g switch is necessary.

> // Linker warning: Warning 161: Unknown CV version, ignored
> // mixin(getEnum(1024));

$ dmd -g -run test
DMD v2.064 DEBUG
OPTLINK (R) for Win32  Release 8.00.12
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
test.obj(test)
 Warning 161: Unknown CV version, ignored

> // ICE // mixin(getEnum(1087));

$ dmd -g -run test
DMD v2.064 DEBUG
Internal error: backend\cgcv.c 203

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bugzilla@digitalmars.com


--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> 2013-10-01 22:34:36 PDT ---
https://github.com/D-Programming-Language/dmd/pull/2614

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--- Comment #3 from github-bugzilla@puremagic.com 2013-10-08 21:31:55 PDT ---
Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/3f1ae3ce0943678840e6066692b2124d86ba91a3
fix Issue 10942 - ICE on 1087+ initializers (Internal error: backend\cgcv.c
203)

https://github.com/D-Programming-Language/dmd/commit/81249a39dc8953537455ed7d7e6109b721e09c78 Merge pull request #2614 from WalterBright/fix10942

fix Issue 10942 - ICE on 1087+ initializers (Internal error: backend\cgc...

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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