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This bug is just a minor annoyance, but it can slow down debugging if one is not aware of it, so I thought I'd share. The following snippets illustrates it:

if ( 0 ) { ; } elsif ( die __LINE__ ) { ; }
If you run it as written, the output is:
4 at line 1.
Note that the line reported by die is incorrect. The same bug exists with warn, and with warnings in general. E.g.
use warnings; if ( 0 ) { ; } elsif ( "$_" ) { ; } __END__ Use of uninitialized value in string at line 2.
Curiously, fatal Compile-time errors don't have this problem:
if ( 0 ) { ; } elsif ( 0/0 ) { ; } __END__ Illegal division by zero at line 4
Stuff happens.

Update: the above examples were run with perl 5.8.6. I haven't looked at other versions. YMMV.

Update 2: thanks to merlyn for the clarification on compile-time vs. run-time behavior, which I originally mis-interpreted as a difference in response between non-fatal and fatal and non-fatal errors.

the lowliest monk

In reply to die/warn bug in elsif by tlm

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