Windows filenames versus URI/URL

[peter-ahe-google]

This is not about the error below. This is about the formatting of the stack trace on Windows as illustrated by the error message below.

Consider the first two lines of of the stack trace:

 0. Function: '_File@689f3ad.openSync' url: './dart:builtin-lib' line:857 col:7
 1. Function: 'FileTest.testReadWriteSync' url: 'e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart' line:201 col:18

Notice these parts in particular:

url: './dart:builtin-lib'
url: 'e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart'

The first is correct, the second contains a Windows file name that can be represented correctly as a URI using this form:

file:///E:/b/build/slave/vm-win32-release/build/tests/standalone/src/FileTest.dart

See: http://blogs.msdn.com/b/ie/archive/2006/12/06/file-uris-in-windows.aspx

Since Dart lives in a world where URI/URL are important and used all the time, I would consider if the basic abstraction should be URIs, not platform dependent filenames.

The example error message is from:

=== releaseia32 vm standalone/FileTest ===
Path: standalone/FileTest

--- stderr ---
An unhandled exception has been thrown
FileIOException: Cannot open file: runtime/tests/vm/data/fixed_length_file_out
 0. Function: '_File@689f3ad.openSync' url: './dart:builtin-lib' line:857 col:7
 1. Function: 'FileTest.testReadWriteSync' url: 'e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart' line:201 col:18
 2. Function: 'FileTest.testMain' url: 'e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart' line:540 col:39
 3. Function: 'main' url: 'e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart' line:555 col:20
Command: e:\b\build\slave\vm-win32-release\build\runtime\Release_ia32\dart_bin --ignore-unrecognized-flags --optimize e:\b\build\slave\vm-win32-release\build\tests\standalone\src\FileTest.dart

[iposva-google]

This is fixed now that the URI handling in imports has been rewritten. Output from a recent test failure on the Windows buildbot:

Unhandled exception:
type 'Null' is not a subtype of type 'bool' of 'boolean expression'.
 0. Function: '::get:_port@6be832b' url: 'dart:isolate' line:374 col:7
 1. Function: '::get:port' url: 'dart:isolate' line:17 col:27
 2. Function: '::timIsolate' url: 'file:///e:/b/build/slave/vm-win32-release/build/dart/tests/isolate/src/APIv2_unresolvedPortsStandaloneTest.dart' line:23 col:3

---

Set owner to @iposva-google.
Added Fixed label.

[peter-ahe-google]

I have filed issue #6 to track handling of //.