$ perl -MO=Concise -e "my DouBloon $x; print $x"
No such class DouBloon at -e line 1, near "my DouBloon"
-e had compilation errors.
8  <@> leave[1 ref] KP/REFC ->(end)
1     <0> enter ->2
2     <;> nextstate(main 1 -e:1) :{ ->3
-     <1> ex-rv2sv K/1 ->4
3        <#> gvsv[*x] ->4
4     <;> nextstate(main 1 -e:1) :{ ->5
7     <@> print K ->8
5        <0> pushmark ->6
-        <1> ex-rv2sv K/1 ->7
6           <#> gvsv[*x] ->7

$ perl -MO=Concise,-src -e "my DouBloon $x; print $x"
No such class DouBloon at -e line 1, near "my DouBloon"
-e had compilation errors.
8  <@> leave[1 ref] KP/REFC ->(end)
1     <0> enter ->2
# 1: -src not supported for -e
2     <;> nextstate(main 1 -e:1) :{ ->3
-     <1> ex-rv2sv K/1 ->4
3        <#> gvsv[*x] ->4
# 1: -src not supported for -e
4     <;> nextstate(main 1 -e:1) :{ ->5
7     <@> print K ->8
5        <0> pushmark ->6
-        <1> ex-rv2sv K/1 ->7
6           <#> gvsv[*x] ->7