Process Pipes

[Gorker]

Hi all,

I'm on macOS 10.11.6 with dmd 2.081.2 and I've a problem with 
std.process.

---
gork ():foo gorker$ gcc -c -Iinclude -o foo.cpp.o src/foo.cpp
In file included from src/foo.cpp:2:
include/foo/foo.hpp:22:10: warning: scoped enumerations are a 
C++11 extension [-Wc++11-extensions]
     enum class foo_event_type_t
          ^
     <snip, about 14k in STDERR>

     56 warnings and 9 errors generated.
---
No output, (zero bytes) in stdout.

If I use standard process to collect both stream with:
---
auto processPipes = pipeProcess(args, Redirect.all, null, 
Config.none, workDir);
foreach (c; pipes.stdout.byChunk(100)) writeln(cast(string) c); 
// <<<---- it halts here: stdout file is empty, but not EOF
foreach (c; pipes.stderr.byChunk(100)) writeln(cast(string) c);
---
Everything is fine if I don't redirect the stderr to a pipe.

Suggestions?