http://d.puremagic.com/issues/show_bug.cgi?id=7851

           Summary: Internal error: e2ir.c 688
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: iteronvexor@gmail.com


--- Comment #0 from iteronvexor@gmail.com 2012-04-07 12:22:10 PDT ---
DMD 2.059beta (not head), on a 64-bit GNU/Linux

---------------->8---------------->8----------------
import std.typecons;
import std.stdio;

void main() {
  alias Tuple!(int, long, float) TL;
  foreach (i, T; TL)
    writefln("TL[%d] = ", i, typeid(T));
}
----------------8<----------------8<----------------

I get:
_field_field_0
Internal error: e2ir.c 688

source (under the section 'Looping'):
http://dlang.org/tuple.html

The code in that section is also wrong and doesn't compile.  The following gives the correct output:

---------------->8---------------->8----------------
import std.typecons;
import std.typetuple;
import std.stdio;


void main() {
  Tuple!(int, long, float) TL;
  foreach (i, T; TL)
    writefln("TL[%d] = %s", i, typeid(T));

  alias TypeTuple!(3, 7L, 6.8) ET;
  foreach (i, E; ET)
    writefln("ET[%d] = %s", i, E);
----------------8<----------------8<----------------

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Robert Clipsham <robert@octarineparrot.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice
                 CC|                            |robert@octarineparrot.com
           Severity|normal                      |regression


--- Comment #1 from Robert Clipsham <robert@octarineparrot.com> 2012-05-02 16:28:48 BST ---
This is a regression (an error was issued in 2.057, the ICE was introduced in
2.058).

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Don <clugdbug@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |clugdbug@yahoo.com.au


--- Comment #2 from Don <clugdbug@yahoo.com.au> 2012-05-14 01:07:26 PDT ---
Maybe this is bug 7851?
(Which would make this a Phobos regression, even though it's a compiler bug)

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Walter Bright <bugzilla@digitalmars.com> changed:

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


--- Comment #3 from Walter Bright <bugzilla@digitalmars.com> 2012-05-15 22:34:41 PDT ---
This reduces to:

template TypeTuple(TList...)
{
    alias TList TypeTuple;
}

struct Tuple(Specs...)
{
    TypeTuple!(int, long, float) mem;

    alias Identity!(mem[0]) _0;
    alias Identity!(mem[1]) _1;
    alias Identity!(mem[2]) _2;

    alias mem this;

    enum length = mem.length;
}

private template Identity(alias T)
{
    alias T Identity;
}

void main() {
  alias Tuple!(int, long, float) TL;
  foreach (i; TL)
  { }
}

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--- Comment #4 from github-bugzilla@puremagic.com 2012-05-15 23:07:51 PDT ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/7e3a2205fca61512dd4245b939d4f7b4e7334419 fix Issue 7851 - Internal error: e2ir.c 688

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Walter Bright <bugzilla@digitalmars.com> changed:

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


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