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Prevent panic in darwin AVX512 detection

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Luke Champine 2021-01-13 12:11:26 -05:00 committed by GitHub
parent 59a82aea36
commit d373079f35
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1 changed files with 1 additions and 1 deletions
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cpu_darwin.go
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@ -17,6 +17,6 @@ func init() {
if !haveAVX512 { if !haveAVX512 {
// On some Macs, AVX512 detection is buggy, so fallback to sysctl // On some Macs, AVX512 detection is buggy, so fallback to sysctl
b, _ := syscall.Sysctl("hw.optional.avx512f") b, _ := syscall.Sysctl("hw.optional.avx512f")
haveAVX512 = b[0] == 1 haveAVX512 = len(b) > 0 && b[0] == 1
} }
} }