https://issues.dlang.org/show_bug.cgi?id=14310

          Issue ID: 14310
           Summary: [REG2.067a] InvalidMemoryOperationError in
                    std.stdio.File.byLine
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: mk@krej.cz

I get core.exception.InvalidMemoryOperationError@(0) when I run the following
program on attached input file (XML).


import std.algorithm, std.file, std.stdio, std.string;

int main(string[] args)
{
  if (args.length < 2) {
    return 1;
  }

  size_t linect = 0;
  foreach (line; File(args[1]).byLine())
    linect += 1;

  return 0;
}

Backtrace:

Breakpoint 1, 0x080b07fc in _d_throwc ()
(gdb) bt
#0  0x080b07fc in _d_throwc ()
#1  0x080b1208 in _d_arrayshrinkfit ()
#2  0x080ac4d4 in object.assumeSafeAppend!(char).assumeSafeAppend(ref
inout(char[])) (arr=0x81210d4)
    at /home/mk/dmd2.test/src/druntime/import/object.di:662
#3  0x080abbc8 in std.stdio.File.ByLineImpl!(char, char).ByLineImpl.popFront()
(this=0x81210c8)
    at /home/mk/dmd2.test/src/phobos/std/stdio.d:1677
#4  0x080ab9eb in std.stdio.File.ByLine!(char, char).ByLine.popFront()
(this=0xffffd914)
    at /home/mk/dmd2.test/src/phobos/std/stdio.d:1624
#5  0x080ab88b in D main (args=...) at wcbug.d:10
(gdb) c
Continuing.
core.exception.InvalidMemoryOperationError@(0)

This happens with 2.067b and master. 2.066 no error. System linux.

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