[Lazarus] Request for student project ideas

[Florian Klaempfl]

Paul Ishenin schrieb:
> {$WARN identifier ON} / {$WARN identifier OFF} where identifier can be:
> SYMBOL_PLATFORM, SYMBOL_DEPRECATED, UNIT_DEPRECATED, UNIT_PLATFORM,
> UNSAFE_CODE OFF, UNSAFE_TYPE OFF, UNSAFE_CAST OFF, IMPLICIT_STRING_CAST,
> ...
> 
> I suggest to allow also ON/OFF by warning message ID. For example
> {$WARN 5033 OFF} will turn off message "Function result does not seem to
> be set".
> 
> Same to do with hints {$HINT message_id ON}/{$HINT message_id OFF}
> although delphi does not support this.
> 
> Why it is easy:
> 1. fpc understand {$WARN} syntax while it currently do nothing
> 2. fpc allow to turn off warnings and messages by ID

Why it's not easy (else it would have been implemented):
- it requires a memory efficient tracking of the state of these switches
for every location in the source. Due to the modularized and decoupled
compilation process of FPC this is not as simple as it might look.