Test.readdir is not skipped on Win32 even though it appears that it should be

[MoC]

t/pmc/os.t:270:

skip 'not implemented on windows yet', 1 if ( $MSWin32 && $MSVC );

It seems like the message doesn't agree with the if clause, because you can also use GCC (MinGW) to compile on Windows. If you compile Parrot on Windows XP SP3 with GCC 4.4 this test will fail (see attached log and smolder report at  http://smolder.plusthree.com/app/public_projects/report_details/24454). However I'm not sure wether the if clause is responsible for this error or GCC 4.4 since other Windows builds compiled with GCC 3.4 pass this test according to smolder (see  http://smolder.plusthree.com/app/public_projects/report_details/24452).

[MoC]

I also attached a logfile created with Process Monitor which displays all queries made to the docs directory. Seems like Parrot just opens the directory and stops, while Perl reads it correctly.

[fperrad]

My current Strawberry Perl 5.10.0.3 is built (and ship) with gcc 3.4.5

I build Parrot with gcc 3.4.5 and the readdir test is OK.

I think that the problem is in the MinGW libc : not the same behaviour between 3.4.5 and 4.4.0

[MoC]

To make sure I compiled the following snippet:

#include <dirent.h>
#include <stdio.h>

int main (int argc, char * argv[])
{
	struct dirent *dirent;
	DIR *dir = opendir("SomeDirectoryThatExists");

	while ((dirent = readdir(dir)) != NULL) {
		printf("%s ", dirent->d_name);
	}

	closedir(dir);
}

Which works as expected. Could it be that the while-loop in the pmc code is not reached at all?

[fperrad]

Could you try to build Parrot without --optimize ?

[MoC]

Replying to fperrad:

Could you try to build Parrot without --optimize ?

Seems like it works without --optimize:  http://smolder.plusthree.com/app/public_projects/report_details/24456. Is there a known bug with --optimize or was that just a guess?

[fperrad]

Configure.pl with --optimize ==> gcc with -O2

-O2 -s works fine with MinGW gcc-3.4.5 (see  http://smolder.plusthree.com/app/public_projects/report_details/24452)

It seems to be a bug of MinGW gcc-4.4.0 when -O2 is enabled
or -O2 always needs -s like with gcc-3.4.5

MinGW gcc-4.4.0 was released on 22 June 2009, so it's very recent.

[jkeenan]

Replying to fperrad:

Configure.pl with --optimize ==> gcc with -O2 -O2 -s works fine with MinGW gcc-3.4.5 (see  http://smolder.plusthree.com/app/public_projects/report_details/24452) It seems to be a bug of MinGW gcc-4.4.0 when -O2 is enabled
or -O2 always needs -s like with gcc-3.4.5 MinGW gcc-4.4.0 was released on 22 June 2009, so it's very recent.

Should we consider adding data like this to the Win32 hints file?

[fperrad]

Same problem with --optimize=-O1

[jkeenan]

Replying to jkeenan:

Replying to fperrad:

Configure.pl with --optimize ==> gcc with -O2 -O2 -s works fine with MinGW gcc-3.4.5 (see  http://smolder.plusthree.com/app/public_projects/report_details/24452) It seems to be a bug of MinGW gcc-4.4.0 when -O2 is enabled
or -O2 always needs -s like with gcc-3.4.5 MinGW gcc-4.4.0 was released on 22 June 2009, so it's very recent.

Should we consider adding data like this to the Win32 hints file?

Can anyone respond?