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Re: [RFC] Deprecate "implicit int" for main() in C++
On 04/25/2018 03:04 PM, Jonathan Wakely wrote:
> On 25/04/18 14:59 +0100, Andrew Haley wrote:
>> On 04/25/2018 02:56 PM, Jason Merrill wrote:
>>> The warning by default seems sufficient to me.
>> Yes. We've been bitten by this a few times, with mysterious crashes.
>> I'm not sure it even makes sense only to be a warning, but I guess
>> that's up to the C++ TC.
> It's not always possible for the compiler to prove that flowing off
> the end never happens, even if the program state ensures that it can't
> (e.g. by all callers enforcing the function's preconditions
> correctly). So making it ill-formed is deemed too draconian whenever
> this gets discussed.
Sure. Having said that, the cases that bit me were those where control
always flowed off the end, i.e. the function contained no return statement.
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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