From maxim.vuets@gmail.com

Rakudo+MoarVM dies on attempt to open a symlink​:

  ~$ ls -l /etc/system-release
  lrwxrwxrwx. 1 root root 14 Mar 30 2014 /etc/system-release -> fedora-release

  ~$ ls -l /etc/fedora-release
  -rw-r--r--. 1 root root 30 Feb 19 2014 /etc/fedora-release

  ~$ cat /etc/system-release
  Fedora release 20 (Heisenbug)

  ~$ perl6 -e 'say open("/etc/system-release").get;'
  Failed to stat in filehandle​: no such file or directory
  in method eof at src/gen/m-CORE.setting​:15551
  in method get at src/gen/m-CORE.setting​:15555
  in block <unit> at -e​:1

slurp() works though​:

  ~$ perl6 -e 'say slurp("/etc/system-release")'
  Fedora release 20 (Heisenbug)

**NB.** It is tricky to reproduce, it has to do something with CWD​:

  ~$ cd /tmp
  /tmp$ pwd
  /tmp
  /tmp$ echo hi >file
  /tmp$ ln -s file link
  /tmp$ perl6 -e 'say open("link").get'
  hi
  /tmp$ perl6 -e 'say open("/tmp/link").get'
  hi
  /tmp$ cd /
  /$ perl6 -e 'say open("/tmp/link").get'
  Failed to stat in filehandle​: no such file or directory
  in method eof at src/gen/m-CORE.setting​:15551
  in method get at src/gen/m-CORE.setting​:15555
  in block <unit> at -e​:1

Here's hoelzro++ input​:

I know why
it reads the link with readlink
and then it tries to stat *that*
if it's a relative path (which is resolved by the kernel as relative to the *symlink*, not the CWD)
perl6 freaks out!
I'm wondering why the hell it's stat'ing
esp. based on the *filename*
that's a race condition waiting to happen

This is perl6 version 2014.11-75-gc91a583 built on MoarVM version 2014.11-66-g23f2089

From @hoelzro

Corresponding issue in MoarVM, with a bit of digging​: MoarVM/MoarVM#160

On Wed Dec 10 13​:02​:27 2014, maxim.vuets@​gmail.com wrote​:

Rakudo+MoarVM dies on attempt to open a symlink​:

~$ ls -l /etc/system-release
lrwxrwxrwx. 1 root root 14 Mar 30 2014 /etc/system-release -> fedora-
release

~$ ls -l /etc/fedora-release
-rw-r--r--. 1 root root 30 Feb 19 2014 /etc/fedora-release

~$ cat /etc/system-release
Fedora release 20 (Heisenbug)

~$ perl6 -e 'say open("/etc/system-release").get;'
Failed to stat in filehandle​: no such file or directory
in method eof at src/gen/m-CORE.setting​:15551
in method get at src/gen/m-CORE.setting​:15555
in block <unit> at -e​:1

slurp() works though​:

~$ perl6 -e 'say slurp("/etc/system-release")'
Fedora release 20 (Heisenbug)

**NB.** It is tricky to reproduce, it has to do something with CWD​:

~$ cd /tmp
/tmp$ pwd
/tmp
/tmp$ echo hi >file
/tmp$ ln -s file link
/tmp$ perl6 -e 'say open("link").get'
hi
/tmp$ perl6 -e 'say open("/tmp/link").get'
hi
/tmp$ cd /
/$ perl6 -e 'say open("/tmp/link").get'
Failed to stat in filehandle​: no such file or directory
in method eof at src/gen/m-CORE.setting​:15551
in method get at src/gen/m-CORE.setting​:15555
in block <unit> at -e​:1

Here's hoelzro++ input​:

I know why
it reads the link with readlink
and then it tries to stat *that*
if it's a relative path (which is resolved by the kernel as relative
to the *symlink*, not the CWD)
perl6 freaks out!
I'm wondering why the hell it's stat'ing
esp. based on the *filename*
that's a race condition waiting to happen

This is perl6 version 2014.11-75-gc91a583 built on MoarVM version
2014.11-66-g23f2089

The RT System itself - Status changed from 'new' to 'open'

From @hoelzro

Fixed in MoarVM 3851372

On Wed Dec 10 21​:09​:21 2014, rob@​hoelz.ro wrote​:

Corresponding issue in MoarVM, with a bit of digging​:
MoarVM/MoarVM#160

On Wed Dec 10 13​:02​:27 2014, maxim.vuets@​gmail.com wrote​:

Rakudo+MoarVM dies on attempt to open a symlink​:

~$ ls -l /etc/system-release
lrwxrwxrwx. 1 root root 14 Mar 30 2014 /etc/system-release ->
fedora-
release

~$ ls -l /etc/fedora-release
-rw-r--r--. 1 root root 30 Feb 19 2014 /etc/fedora-release

~$ cat /etc/system-release
Fedora release 20 (Heisenbug)

~$ perl6 -e 'say open("/etc/system-release").get;'
Failed to stat in filehandle​: no such file or directory
in method eof at src/gen/m-CORE.setting​:15551
in method get at src/gen/m-CORE.setting​:15555
in block <unit> at -e​:1

slurp() works though​:

~$ perl6 -e 'say slurp("/etc/system-release")'
Fedora release 20 (Heisenbug)

**NB.** It is tricky to reproduce, it has to do something with CWD​:

~$ cd /tmp
/tmp$ pwd
/tmp
/tmp$ echo hi >file
/tmp$ ln -s file link
/tmp$ perl6 -e 'say open("link").get'
hi
/tmp$ perl6 -e 'say open("/tmp/link").get'
hi
/tmp$ cd /
/$ perl6 -e 'say open("/tmp/link").get'
Failed to stat in filehandle​: no such file or directory
in method eof at src/gen/m-CORE.setting​:15551
in method get at src/gen/m-CORE.setting​:15555
in block <unit> at -e​:1

Here's hoelzro++ input​:

I know why
it reads the link with readlink
and then it tries to stat *that*
if it's a relative path (which is resolved by the kernel as
relative
to the *symlink*, not the CWD)
perl6 freaks out!
I'm wondering why the hell it's stat'ing
esp. based on the *filename*
that's a race condition waiting to happen

This is perl6 version 2014.11-75-gc91a583 built on MoarVM version
2014.11-66-g23f2089

@hoelzro - Status changed from 'open' to 'resolved'