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```
#!/usr/bin/perl

...
foo();
bar();
```

Global symbol "$undeclared_variable" requires explicit package name (d
+id you forget to declare "my $undeclared_variable"?) at perl_bad_erro
+r_msg.pl line 9.
Type of arg 1 to List::Util::any must be block or sub {} (not referenc
+e constructor) at perl_bad_error_msg.pl line 14, near "qw(some option
+s or whatever)) "
Execution of perl_bad_error_msg.pl aborted due to compilation errors.