File.remove() has problems with long filenames (>128 bytes)

[dlangBugzillaToGithub]

arkay reported this on 2017-04-16T13:48:16Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=17329

Description

This is a rather weird issue that only pops up in a release build:

std.file.FileException@D:\Dlang\dmd2\windows\bin\..\..\src\phobos\std\file.d(733): 1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234.cbr: The system cannot find the file specified.

Filenames up to 128 bytes work fine, anything above it throws this exception.

Building in Visual Studio 2017, output is MS-COFF. The debug build works fine.

[dlangBugzillaToGithub]

b2.temp commented on 2017-04-17T12:54:59Z

(In reply to Rainer Koschnick from comment #0)
> This is a rather weird issue that only pops up in a release build:
> 
> std.file.FileException@D:\Dlang\dmd2\windows\bin\..\..\src\phobos\std\file.
> d(733):
> 12345678901234567890123456789012345678901234567890123456789012345678901234567
> 89012345678901234567890123456789012345678901234.cbr: The system cannot find
> the file specified.
> 
> Filenames up to 128 bytes work fine, anything above it throws this exception.
> 
> Building in Visual Studio 2017, output is MS-COFF. The debug build works
> fine.

Try

void removeFileEx(string filename)
{
    import std.file : remove;
    return remove("\\?\" ~ filename);
}

Adding the prefix turns the filename into a fully qualified name and should have for effect to remove the MAX_PATH (260 chars) limitation.

[dlangBugzillaToGithub]

arkay commented on 2017-04-18T15:44:13Z

Thanks for the hint, but it doesn't change anything.

Error: \\?\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.cbz: The system cannot find the file specified.

Neither does...

Error: .\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.cbz: The system cannot find the file specified.

Nor using a complete path...

Error: D:\_Development_\D\cbc\0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789.cbz: The system cannot find the file specified.

[dlangBugzillaToGithub]

b2.temp commented on 2017-04-20T00:17:37Z

I meant fully qualified filename !

\\?\D:\_Development_\D\cbc\...

[dlangBugzillaToGithub]

arkay commented on 2017-04-20T01:00:41Z

I tried it with the path as you can see up there!