version(noboundscheck) + friends

[Timothee Cour]

I meant 'why not have version(noboundscheck) instead of
version(D_NoBoundsChecks)'
of course.

On Mon, Jun 3, 2013 at 4:48 PM, Timothee Cour <thelastmammoth at gmail.com>wrote:

> Again, this seems like an unimportant technicality.
> For user code, whether the logic is handled in the compiler or druntime
> shouldn't make a difference, so why not have version(D_NoBoundsChecks)
> instead of version(noboundscheck). It makes it more discoverable, and more
> consistent with the rest (eg: dmd -debug will imply version(debug) is on).
>
>
> On Mon, Jun 3, 2013 at 4:29 PM, Jonathan M Davis <jmdavisProg at gmx.com>wrote:
>
>> On Monday, June 03, 2013 15:19:22 Ali Çehreli wrote:
>> >  > B)
>> >  > Why aren't we using version=noboundscheck (+ friends) instead of
>> >  > -noboundscheck?
>> >
>> > Because the runtime is not written in D. :) However, it should be easy
>> > to translate version=noboundscheck to -noboundscheck.
>>
>> The runtime _is_ written in D. It's the compiler that isn't, and the
>> compiler
>> itself generates different code based on noboundscheck. But the version
>> D_NoBoundsChecks is new (it might even be new with this release -
>> certainly at
>> most it's a release or two old). We've had the noboundscheck flag far, far
>> longer than that. The same goes for the assert version. It was only added
>> very
>> recently, but we've always had assertions.
>>
>> Also, if you'll notice, version is _never_ used to control anything that
>> the
>> compiler itself does. It affects code that you write, because of what
>> you've
>> done with version blocks, but the compiler itself doesn't change what it
>> does
>> due to the version flag save for which version blocks do or don't get
>> compiled
>> in. Compiler flags are used to control the compiler, not version
>> identifiers.
>> All of the standard identifiers are for user code to be able to react to
>> what
>> version of the compiler you're using, what system you're on, and what
>> compilation flags you used. The only ones that get set by the user are
>> user-
>> defined versions.
>>
>> - Jonathan M Davis
>>
>
>
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