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authorFather Chrysostomos <sprout@cpan.org>2011-05-31 21:32:28 -0700
committerFather Chrysostomos <sprout@cpan.org>2011-05-31 21:32:28 -0700
commit69b22cd191e9b6eff1e60a75aa38b87646cfb775 (patch)
tree45a707e25fd637c2f89f7e6d318ab3512755a6c8 /cpan/CPAN/lib
parent6b8305409e650748b2e6fb75634200370b69238b (diff)
downloadperl-69b22cd191e9b6eff1e60a75aa38b87646cfb775.tar.gz
Make empty lvalue subs work correctly
In perl 5.8.1 and earlier, sub{} would return @_ in list context. This was fixed in 5.8.2 for regular subs, but not lvalue subs. Before the syntactic restriction on return values was removed in commit 145b2bb, there was a bug affecting compilation of empty subs before any use statement: $ perl5.14.0 -e 'sub foo :lvalue {}' Can't modify stub in lvalue subroutine return at -e line 1, near "{}" Execution of -e aborted due to compilation errors. $ perl5.14.0 -le 'use sigtrap; sub foo :lvalue {} print "ok"' ok But I digress. :-) Up to 5.14, lvalue subs were still returning @_, or, rather, the ele- ments of @_ as separate scalars: $ perl5.14.0 -Mre -le '(sub :lvalue {}->($a,$b))=(3,4); print "$a $b"' Useless use of "re" pragma at -e line 0 3 4 (Not exactly useless, eh? The -Mre allows the sub to compile.) This commit fixes that bug.
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