From @AlexDaniel

Code​:
say 'test' ~~ / te $$ st /;

Result​:
Nil

Well, sure it is Nil, but the problem is that there is no string that could
possible match that regex (not even 'te$$st'). If such regex does not make
any sense, then an error should be thrown.

From @jnthn

On Wed Jun 17 14​:42​:31 2015, alex.jakimenko@​gmail.com wrote​:

Code​:
say 'test' ~~ / te $$ st /;

Result​:
Nil

Well, sure it is Nil, but the problem is that there is no string that could
possible match that regex (not even 'te$$st'). If such regex does not make
any sense, then an error should be thrown.

^^ and $$ could easily match in the middle of a string, since they mean "start of line" and "end of line", and strings can be multi-line. While ^ and $ never could match in the middle of a regex, I don't think it's worth the compiler bloat to catch that one.

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

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