[PATCH] test: Disable standard system includes in %clang_cc1

[Justin Bogner]

r219030. Thanks!

Richard Smith <richard at metafoo.co.uk> writes:
> LGTM
>
> On 3 Oct 2014 15:18, "Justin Bogner" <mail at justinbogner.com> wrote:
>
>     This adds -nostdsysteminc to the %clang_cc1 expansion, which should
>     make it harder to accidentally write tests that depend on headers in
>     /usr/include. It also updates a few tests that use -isysroot <x> and a
>     darwin triple to omit the triple and use -isystem <x>/usr/include
>     instead, making them a little bit more general.
>    
>     Incidentally, this fixes a test failure I'm seeing on darwin in
>     Modules/stddef.c, that happens because my system finds a stddef.h in
>     /usr/include.
>    
>     Okay to commit?
>
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