[swift-dev] Differences between Xcode official toolchains and tagged releases from repository

[Jordan Rose]

Aha, so the second bug is because home-built toolchains have assertions on by default and Xcode GM toolchains generally have them off. (Not a promise, but true of the last few Xcodes.) Of course, if you hit an assertion failure, there’s no telling what the no-asserts build is actually doing.

I’m not so sure the first bug falls into the same category yet, but it might as well.

Jordan


> On Oct 4, 2016, at 14:05, Jordan Rose via swift-dev <swift-dev at swift.org> wrote:
> 
> Thanks, Xavi. Hopefully these aren't blocking you in Xcode 8 either (in either Swift 2.3 or Swift 3).
> 
>> On Oct 4, 2016, at 8:03, Xavier Jurado via swift-dev <swift-dev at swift.org> wrote:
>> 
>> Hello Jordan,
>> 
>> We have filled two bugs against bugs.swift.org to document two crashes
>> that are only reproducible with our toolchain built from the
>> swift-2.2.1-RELEASE tag, but that appear fixed in the official
>> toolchain bundled with Xcode 7.3.1 (7D1014).
>> 
>> Crashers:
>> 
>> https://bugs.swift.org/browse/SR-2844
>> https://bugs.swift.org/browse/SR-2845
>> 
>> Since using the official toolchain somehow fixes the issues we realize
>> they are far from critical, but we have reported them in hope of
>> finding the discrepancies between the official toolchain and the the
>> tagged releases.
>> 
>> Thanks,
>> Xavi
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>> swift-dev at swift.org
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> 
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