$ perl -e'use v5.35; abc def;'
Bareword found where operator expected (Do you need to predeclare "abc"?) at -e line 1, near "abc def"
syntax error at -e line 1, near "abc def"
Execution of -e aborted due to compilation errors.

$ perl -e'use feature qw( :5.35 ); abc def;'
Can't locate object method "abc" via package "def" (perhaps you forgot to load "def"?) at -e line 1.

$ perl -e'no feature qw( :all ); use feature qw( :5.35 ); abc def;'
Bareword found where operator expected (Do you need to predeclare "abc"?) at -e line 1, near "abc def"
syntax error at -e line 1, near "abc def"
Execution of -e aborted due to compilation errors.