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digitalmars.D.bugs - [Issue 17984] New: compile error using DMD v2.077.0-160

https://issues.dlang.org/show_bug.cgi?id=17984

          Issue ID: 17984
           Summary: compile error using DMD v2.077.0-160
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: orfeo fastmail.com

I cannot compile [pegged](https://github.com/PhilippeSigaud/Pegged) with dmd
v2.077.0-160

```
$ dmd --version
DMD64 D Compiler v2.077.0-160-g03e806aba
Copyright (c) 1999-2017 by Digital Mars written by Walter Bright
```
So:
```
$ git clone git github.com:PhilippeSigaud/Pegged.git
$ cd Pegged

$ dub --force
Performing "debug" build using dmd for x86_64.
pegged 0.4.2+commit.13.g6308f57: building configuration "default"...
pegged/dynamic/grammar.d(270,21): Error: undefined identifier __switch in
module object
pegged/dynamic/grammar.d(296,17): Error: undefined identifier __switch in
module object
pegged/dynamic/grammar.d(189,9): Error: undefined identifier __switch in module
object
pegged/dynamic/grammar.d(351,5): Error: undefined identifier __switch in module
object
pegged/introspection.d(194,9): Error: undefined identifier __switch in module
object
pegged/introspection.d(255,9): Error: undefined identifier __switch in module
object
pegged/introspection.d(298,9): Error: undefined identifier __switch in module
object
/usr/include/dlang/dmd/std/traits.d(1560,9): Error: undefined identifier
__switch in module object
/usr/include/dlang/dmd/std/traits.d(1426,70): Error: CTFE failed because of
previous errors in extractAttribFlags
/usr/include/dlang/dmd/std/typecons.d(4414,29): Error: template instance
std.traits.functionAttributes!(ParseTree function(ParseTree)  system) error
instantiating
/usr/include/dlang/dmd/std/functional.d(1301,13):        instantiated from
here: generateFunction!("FuncInfo_doIt", "doIt", ParseTree function(ParseTree)
 system)
/usr/include/dlang/dmd/std/functional.d(1342,38):        instantiated from
here: DelegateFaker!(ParseTree function(ParseTree)  system)
pegged/parser.d(153,38):        instantiated from here: toDelegate!(ParseTree
function(ParseTree)  system)
pegged/parser.d(2115,7):        instantiated from here:
GenericPegged!(ParseTree)
/usr/include/dlang/dmd/std/functional.d(1301,13): Error: CTFE failed because of
previous errors in generateFunction
pegged/tester/testerparser.d(49,9): Error: undefined identifier __switch in
module object
dmd failed with exit code 1.
```

My environment
```
$ uname --all
Linux abe 4.13.11-1-ARCH #1 SMP PREEMPT Thu Nov 2 10:25:56 CET 2017 x86_64
GNU/Linux

$ dub --version
DUB version 1.6.0, built on Nov  3 2017
```


See also https://github.com/PhilippeSigaud/Pegged/issues/237

--
Nov 15