Re^5: File::Temp survival and scope created by "do"

If you use -MO=Concise,-exec and put the two programs side by side, one can see the scope (enter+leave) is literally missing.

do{1;my $x=bless{}}; print "Bar"    do{my $x=bless{}}; print "Bar"
=================================   =================================
1  <0> enter                        1  <0> enter
2  <;> nextstate(main 3 -e:1) v:{   2  <;> nextstate(main 3 -e:1) v:{
3  <0> enter v                      
4  <;> nextstate(main 4 -e:1) v     
5  <0> pushmark s                   3  <0> pushmark s                
6  <@> anonhash sK*                 4  <@> anonhash sK*              
7  <@> bless sK/1                   5  <@> bless sK/1                
8  <0> padsv[$x:4,5] sRM*/LVINTRO   6  <0> padsv[$x:4,5] sRM*/LVINTRO
9  <2> sassign vKS/2                7  <2> sassign vKS/2             
a  <@> leave vKP                    
b  <;> nextstate(main 6 -e:1) v:{   8  <;> nextstate(main 6 -e:1) v:{
c  <0> pushmark s                   9  <0> pushmark s                
d  <$> const[PV "Bar"] s            a  <$> const[PV "Bar"] s         
e  <@> print vK                     b  <@> print vK                  
f  <@> leave[1 ref] vKP/REFC        c  <@> leave[1 ref] vKP/REFC
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Re^6: File::Temp survival and scope created by "do" by Eily (Monsignor) on Dec 11, 2018 at 00:09 UTC
It's harder to tell in haukex's version though (without the -exec option) because the shorter version as an extra: `<@> scope vK ->-` so it's kind of hard to say that the scope is obviously missing :P. I'm guessing that this is the local scope, that makes local work as intended, but the scope that is entered and leaved (yes I very English, thank you) in the longer version is the lifetime of the scalar.	[reply] [d/l]
Re^7: File::Temp survival and scope created by "do" by ikegami (Patriarch) on Dec 11, 2018 at 04:14 UTC
because the shorter version as an extra: `<@> scope vK ->-` The `-` at the start of the line means it's not reachable, though, which is why it doesn't show when using `-exec`. Update: Clarified. It previously said "The leading `-` ...".	[reply] [d/l] [select]