foreach(line; f.byLine) produces core.exception.InvalidMemoryOperationError@(0) in 2.067 but not 2.066

[Andrwe Brown via Digitalmars-d-learn]

Hi,

I'm trying to read a file line by line, and I get a 
core.exception.InvalidMemoryOperationError@(0), even after 
reducing the program to:

import std.stdio;

void main()
{
  File f = File("testfile");
  foreach(line; f.byLine)
  {
  }
}

The file is a simple table of ascii characters, 811 columns and 
it fails on the second line. Taking any subset of the columns and 
the program runs fine so I don't think it can by any particular 
file corruption.

In this simple example I can get it to work by changing:

foreach(line; f.byLine)

to

foreach(char[] line; f.byLine)

but in my more complicated program this still fails with the same 
error:

foreach (char[] lineVar; inFile.byLine)
{
  lineVar.split.indexed(places).joiner("\t").writeln;
}

(as does the range version I originally wrote:
inFile.byLine.map!(a => 
a.split.indexed(places).joiner("\t")).joiner("\n").writeln;)

Is this a bug, gdc on version 2.066 seems to have no problems 
with it? I'd be happy to fill in a bug report, but I can't share 
the file as it's sensitive genetic data and I haven't been able 
to reduce it to anything innocuous.

This has me very puzzled, any suggestions would be much 
appreciated.

Thanks very much

Andrew