Interesting. Division by zero is intentionally deferred to compile time. 

$ perl -c -e'3/0'
-e syntax OK

$ perl -e'3/0'
Illegal division by zero at -e line 1.

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Yet chop is constant folded even though that always results in an exception.

Update: Ah! The exception is probably not from constant folding. It's probably a compile-time requirement for an lvalue. 

$ perl -e'chop "fred"'
Can't modify constant item in chop at -e line 1, at EOF
Execution of -e aborted due to compilation errors.

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runs afoul the same check as 

$ perl -e'"fred" = $_'
Can't modify constant item in scalar assignment at -e line 1, at EOF
Execution of -e aborted due to compilation errors.

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In reply to Re^2: Why isn't a fatal error trappable? by ikegami
in thread Why isn't a fatal error trappable? by perl-diddler

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