From @masak

<JimmyZ> [root@​li618-176 ~]# perl6 -e 'say "abc".subst(/.+/, "a")'
<JimmyZ> a
<JimmyZ> [root@​li618-176 ~]# perl6
<JimmyZ> > my $s = 'abc';
<JimmyZ> abc
<JimmyZ> > $s.subst(/.+/, 'a')
<JimmyZ> Segmentation fault (core dumped)
<JimmyZ> A bug...
<masak> JimmyZ​: reproduced locally.
* masak submits rakudobug

$ perl6 --version
This is perl6 version 2014.04-5-g921615b built on MoarVM version 2014.04

The trigger seems to be *any* use of .subst after the first thing
evaluated on the REPL.

$ perl6

""

"".subst(/<?>/, "")
Segmentation fault

From @perlpilot

On Thu Apr 24 07​:58​:22 2014, masak wrote​:

<JimmyZ> [root@​li618-176 ~]# perl6 -e 'say "abc".subst(/.+/, "a")'
<JimmyZ> a
<JimmyZ> [root@​li618-176 ~]# perl6
<JimmyZ> > my $s = 'abc';
<JimmyZ> abc
<JimmyZ> > $s.subst(/.+/, 'a')
<JimmyZ> Segmentation fault (core dumped)
<JimmyZ> A bug...
<masak> JimmyZ​: reproduced locally.
* masak submits rakudobug

$ perl6 --version
This is perl6 version 2014.04-5-g921615b built on MoarVM version 2014.04

The trigger seems to be *any* use of .subst after the first thing
evaluated on the REPL.

$ perl6

""

"".subst(/<?>/, "")
Segmentation fault

Seems to be fixed ...
➤ perl6 --version
This is perl6 version 2014.07-62-gc00999a built on MoarVM version 2014.07-34-g0513b67
➤ perl6

my $s = 'abc';
abc
$s.subst(/.+/, 'a')
a

-Scott

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

From @jnthn

On Tue Jul 29 08​:44​:15 2014, duff wrote​:

On Thu Apr 24 07​:58​:22 2014, masak wrote​:

<JimmyZ> [root@​li618-176 ~]# perl6 -e 'say "abc".subst(/.+/, "a")'
<JimmyZ> a
<JimmyZ> [root@​li618-176 ~]# perl6
<JimmyZ> > my $s = 'abc';
<JimmyZ> abc
<JimmyZ> > $s.subst(/.+/, 'a')
<JimmyZ> Segmentation fault (core dumped)
<JimmyZ> A bug...
<masak> JimmyZ​: reproduced locally.
* masak submits rakudobug

$ perl6 --version
This is perl6 version 2014.04-5-g921615b built on MoarVM version
2014.04

The trigger seems to be *any* use of .subst after the first thing
evaluated on the REPL.

$ perl6

""

"".subst(/<?>/, "")
Segmentation fault

Seems to be fixed ...
➤ perl6 --version
This is perl6 version 2014.07-62-gc00999a built on MoarVM version
2014.07-34-g0513b67
➤ perl6

my $s = 'abc';
abc
$s.subst(/.+/, 'a')
a

Yup, also can't reproduce it​:

my $s = 'abc';
abc
$s.subst(/.+/, 'a')
a

So, resolving; can always re-open with more info if it turns out it is still crashy on some platform combination.

Thanks,

/jnthn

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