Re^3: Unknown Arithmetic Warning: Cannot determine source

I can't duplicate your result:

~$ perl5.8.8 -we'$cur[2]=20; $win[2]=100; $sec[2]=undef; if ($cur[2] >
+ $win[2]) {}' -e'elsif (0+$cur[2] > 0+$sec[2]) {}'
Use of uninitialized value in addition (+) at -e line 1.
[download]

And the same on 5.8.9-to-be.

perl588\bin\perl -V?

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Comment on Re^3: Unknown Arithmetic Warning: Cannot determine source Download Code

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Re^4: Unknown Arithmetic Warning: Cannot determine source by ikegami (Patriarch) on Nov 04, 2008 at 08:41 UTC
ActivePerl 5.8.8 build 824 Read more... (4 kB) It appears to be the result of a patch applied by ActiveState, since it wasn't fixed in build 817. `>perl588_817\bin\perl -we"$cur[2]=20; $win[2]=100; $sec[2]=undef; if ( +$cur[2] > $win[2]) {}" -e"elsif (0+$cur[2] > 0+$sec[2]) {}" Use of uninitialized value in addition (+) at -e line 1. >perl588\bin\perl -we"$cur[2]=20; $win[2]=100; $sec[2]=undef; if ($cur +[2] > $win[2]) {}" -e"elsif (0+$cur[2] > 0+$sec[2]) {}" Use of uninitialized value in addition (+) at -e line 2.` [download] Ignoring whitespace changes, the only difference between the -MO=Concise of b817 and b824 is `- <1> null vK/1 ->- s <\|> and(other->t) vK/1 ->k +- <@> lineseq sK ->s +- <0> ex-nextstate v* ->l r <2> gt sK/2 ->s n <2> add[t7] sK/2 ->o` [download]	[reply] [d/l] [select]

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Re^4: Unknown Arithmetic Warning: Cannot determine source
by ikegami (Patriarch) on Nov 04, 2008 at 08:41 UTC

ActivePerl 5.8.8 build 824

Read more... (4 kB)

It appears to be the result of a patch applied by ActiveState, since it wasn't fixed in build 817.

>perl588_817\bin\perl -we"$cur[2]=20; $win[2]=100; $sec[2]=undef; if (
+$cur[2] > $win[2]) {}" -e"elsif (0+$cur[2] > 0+$sec[2]) {}"
Use of uninitialized value in addition (+) at -e line 1.

>perl588\bin\perl -we"$cur[2]=20; $win[2]=100; $sec[2]=undef; if ($cur
+[2] > $win[2]) {}" -e"elsif (0+$cur[2] > 0+$sec[2]) {}"
Use of uninitialized value in addition (+) at -e line 2.
[download]

Ignoring whitespace changes, the only difference between the -MO=Concise of b817 and b824 is

 -           <1> null vK/1 ->-
 s              <|> and(other->t) vK/1 ->k
+-                 <@> lineseq sK ->s
+-                    <0> ex-nextstate v* ->l
 r                    <2> gt sK/2 ->s
 n                       <2> add[t7] sK/2 ->o
[download]

[reply]
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[select]