Re: I don't care about *your* warnings!

You can't disable a module's warnings if they were enabled using use warnings;.

If the module's warnings are enabled using -w or $^W, you can disable them using

{
   local $^W = 0;
   call_other_module();
}
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If you want others to be able to disable your warnings, you can do something like the following:

use if !$ENV{NOWARN}, 'warnings';
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Note: The condition — !$ENV{NOWARN} in this case — is evaluated at the module's compile time, when its loaded.

( philcrow mentioned warnings::register as another means of letting others silence your warnings. )

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Re^2: I don't care about your warnings! (register) by tye (Sage) on Feb 28, 2007 at 20:32 UTC
The docs on warnings aren't particularly clear on this point to me. It looks like warnings::register allows me to define a new class of warnings (with the same name as the module). But "uninit value" is already in a class so would disabling the "Contextual::Return" class of warnings disable "uninit value" warnings that come from the Contextual::Return package? It looks like it only works to disable warnings when the package goes out of its way to use things like warnings::warnif(...) and so I'm doubtful that it has any impact on the warnings being discussed here. Sorry, I don't have the time/motivation at the moment to construct test cases to answer this question myself (for my version of things, anyway); but I am interested in coming back later and reading more about this. (: - tye	[reply]
Re^3: I don't care about your warnings! (register) by ikegami (Patriarch) on Feb 28, 2007 at 21:07 UTC
I ran some tests, and `warnif` (and similar constructs) is the only thing affected. Update: Specifically, `no warnings 'OtherModule';` has no effect on builtin warnings. `use warnings 'OtherModule';` has no effect on builtin warnings. `use warnings 'OtherModule';` has no effect on `warn` warnings. `no warnings 'OtherModule';` has no effect on `warn` warnings. `use warnings 'OtherModule';` in the caller enables `warnings::warnif` warnings in the module. `no warnings 'OtherModule';` in the caller disables `warnings::warnif` warnings in the module. `use warnings 'OtherModule';` in the module has no effect. `no warnings 'OtherModule';` in the module has no effect. `use warnings;` in the caller enables `warnings::warnif` warnings in the module. `no warnings;` in the caller disables `warnings::warnif` warnings in the module. `use warnings;` in the module has no effect on `warnings::warnif` warnings in the module. `no warnings;` in the module has no effect on `warnings::warnif` warnings in the module.	[reply] [d/l] [select]