From: bors <bors@rust-lang.org>
Date: Thu, 8 Dec 2016 07:05:19 +0000 (+0000)
Subject: Auto merge of #38146 - kali:master, r=alexcrichton
X-Git-Url: https://git.lizzy.rs/?a=commitdiff_plain;h=816a34aca23f3ebd0fddf79ebdf96c9fae976f58;p=rust.git

Auto merge of #38146 - kali:master, r=alexcrichton

fix objc ABI in std::env::args

iOS use different calling convention for `objc_msgSend` depending on the platform. armv7 expect good old variadic arguments, but aarch64 wants "normal" convention: `objc_msgSend` has to be called mimicking the actual callee prototype.

https://developer.apple.com/library/content/documentation/General/Conceptual/CocoaTouch64BitGuide/ConvertingYourAppto64-Bit/ConvertingYourAppto64-Bit.html#//apple_ref/doc/uid/TP40013501-CH3-SW26

This currently breaks std::env:args() on aarch64 iOS devices. As far as I can tell, in the standard library, this is the only occurrence of ObjectiveC dispatching.
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816a34aca23f3ebd0fddf79ebdf96c9fae976f58