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avoid compiling avx512_detected() when the "c_avx512" feature is disabled 

https://github.com/rust-lang/rust/issues/68905 is currently causing
nightly builds to fail, unless `--no-default-features` is used. This
change means that the default build will succeed, and the failure will
only happen when the "c_avx512" is enabled. The `b3sum` crate will still
fail to build on nightly, because it enables that feature, but most
callers should start succeeding on nightly.
This commit is contained in:
Jack O'Connor 2020-02-10 15:24:10 -05:00
parent 0de4412884
commit e43a7d68bc
1 changed files with 1 additions and 0 deletions
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src/platform.rs
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@ -252,6 +252,7 @@ impl Platform {
// Note that AVX-512 is divided into multiple featuresets, and we use two of
// them, F and VL.
#[cfg(feature = "c_avx512")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
#[inline(always)]
pub fn avx512_detected() -> bool {