From @masak

<masak> heh, I think I found a bug in the regex engine :)
<masak> m​: /+/; say "alive"
<camelia> rakudo-moar fb9127​: OUTPUT«===SORRY!=== Error while
compiling /tmp/MtEpSUUPer␤Quantifier quantifies nothing [...]
<masak> m​: my $rx = "+"; "" ~~ /<$rx>/; say "alive"
<camelia> rakudo-moar fb9127​: OUTPUT«Memory allocation failed; could
not allocate 929136640 bytes␤»
* masak submits rakudobug
<masak> my assumption here is the /+/ is still a syntax error, even if
it happens through an injected regex.

S05 says "If the compilation of the string form fails, the error
message is converted
to a warning and the assertion fails."

So, it shouldn't die, just fail the match. It definitely shouldn't
loop forever and run out of memory.

From @usev6

This dies now with the same typed exception​:

$ perl6 -e 'my $rx = "+"; "" ~~ /<$rx>/; say "alive"'
===SORRY!=== Error while compiling EVAL_0
Quantifier quantifies nothing
at EVAL_0​:1
------> anon regex { +⏏}

But as masak pointed out, S05 says it should not die​:

On Sat Dec 20 13​:10​:32 2014, masak wrote​:

[...]
S05 says "If the compilation of the string form fails, the error
message is converted
to a warning and the assertion fails."

So, it shouldn't die, just fail the match. It definitely shouldn't
loop forever and run out of memory.

@usev6 - Status changed from 'new' to 'open'

From @AlexDaniel

Still dies the same way.

On 2015-04-25 06​:34​:23, bartolin@​gmx.de wrote​:

This dies now with the same typed exception​:

$ perl6 -e 'my $rx = "+"; "" ~~ /<$rx>/; say "alive"'
===SORRY!=== Error while compiling EVAL_0
Quantifier quantifies nothing
at EVAL_0​:1
------> anon regex { +⏏}

But as masak pointed out, S05 says it should not die​:

On Sat Dec 20 13​:10​:32 2014, masak wrote​:

[...]
S05 says "If the compilation of the string form fails, the error
message is converted
to a warning and the assertion fails."

So, it shouldn't die, just fail the match. It definitely shouldn't
loop forever and run out of memory.