From @AlexDaniel

Code​:
sub foo ( --> -Inf) { }; say foo

Result(2016.11)​:
-Inf

Result(HEAD)​:
===SORRY!=== Error while compiling -e
Malformed return value
at -e​:1
------> sub foo ( -->⏏ -Inf) { }; say foo

Bisectable points to rakudo/rakudo@ae614f9

From @zoffixznet

On Tue, 27 Dec 2016 08​:24​:06 -0800, alex.jakimenko@​gmail.com wrote​:

Code​:
sub foo ( --> -Inf) { }; say foo

Result(2016.11)​:
-Inf

Result(HEAD)​:
===SORRY!=== Error while compiling -e
Malformed return value
at -e​:1
------> sub foo ( -->⏏ -Inf) { }; say foo

Bisectable points to
rakudo/rakudo@ae614f9

Closing this as it's a dupe of #​130249. The only reason it ever worked is due to another bug that treated -Inf as a single term.

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

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