[perl #131510] [SEGV] Segfault when `-Ilib` while running a file that does `use lib ` and loads some modules

[Nick Logan via RT]

This appears to be resolved - possibly in 
https://github.com/rakudo/rakudo/commit/37250ed5ebc3d25eae656ddfa19187c90a712e3c

[perl #131510] [SEGV] Segfault when `-Ilib` while running a file that does `use lib ` and loads some modules

[Zoffix Znet via RT]

Also noticed another failure mode in a more recent version[^1] of the test file:

fails (likely due to segv): prove -e 'perl6 -Ilib' -r   t/03-DESTROY.t
succeeds:   prove -e 'perl6 -Ilib' -vlr t/03-DESTROY.t

And removing the `-Ilib` from prove line didn't help it, but removing the `use 
lib` from the
test file and using solely -Ilib avoided the problem.


[1] 
https://github.com/zoffixznet/perl6-Temp-Path/blob/0c2d855ffd4e602aafc34297f17d2a428c080cdd/t/03-DESTROY.t

[perl #131510] [SEGV] Segfault when `-Ilib` while running a file that does `use lib ` and loads some modules

[Zoffix Znet via RT]

Also noticed another failure mode in a more recent version[^1] of the test file:

fails (likely due to segv): prove -e 'perl6 -Ilib' -r   t/03-DESTROY.t
succeeds:   prove -e 'perl6 -Ilib' -vlr t/03-DESTROY.t

And removing the `-Ilib` from prove line didn't help it, but removing the `use 
lib` from the
test file and using solely -Ilib avoided the problem.


[1] 
https://github.com/zoffixznet/perl6-Temp-Path/blob/0c2d855ffd4e602aafc34297f17d2a428c080cdd/t/03-DESTROY.t

[perl #131510] [SEGV] Segfault when `-Ilib` while running a file that does `use lib ` and loads some modules

[via RT]

# New Ticket Created by  Zoffix Znet 
# Please include the string:  [perl #131510]
# in the subject line of all future correspondence about this issue. 
# https://rt.perl.org/Ticket/Display.html?id=131510 >


To get code that segfaults:

cd $(mktemp -d); git clone https://github.com/zoffixznet/perl6-Temp-Path . 
; git checkout ca5ab2816705cf36911b91e4029224b4d4644a2d;

Now run this several times and it'll segfault ~50% of the time:

perl6 -Ilib t/03-DESTROY.t

The test file already does `use lib ` and if you remove `-Ilib` switch, 
the segfault seems to disappear:

perl6 t/03-DESTROY.t

I tried making a small test case that just had a dummy module and was doing 
`use lib ` but that didn't segfault.

Perhaps it's got to do with loading some installed modules?