Thiago Macieira wrote:

> You'll need to test with upstream Clang 3.7 and 3.8 to verify whether the
> issue is fixed. Apple's "random point in the release cycle plus random set of
> patches" Clang is not a good testbed for reporting compiler failures.

I'd agree with you if it weren't so damn difficult to get Qt to build with 
something else but Apple's compilers; xcrun is queried at several levels to 
know 
what command to use.

> 
> I will not take a patch that disables CRC32 due to a compiler bug in an
> unsupported configuration (LTO), especially if it's already fixed in the
> latest version.

But what about the fact that that those intrinsics are still used even when 
configure is called with -no-sse4.1 and -no-sse4.2?

R.

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