rust/tests/ui/target-feature/missing-plusminus-2.stderr

warning: unknown feature specified for `-Ctarget-feature`: `rdrand`
   |
   = note: features must begin with a `+` to enable or `-` to disable it

warning: 1 warning emitted
Do not pass through features without +/- prefix LLVM really dislikes this and will assert, saying something along the lines of: ``` rustc: llvm/lib/MC/MCSubtargetInfo.cpp:60: void ApplyFeatureFlag( llvm::FeatureBitset&, llvm::StringRef, llvm::ArrayRef<llvm::SubtargetFeatureKV> ): Assertion `SubtargetFeatures::hasFlag(Feature) && "Feature flags should start with '+' or '-'"` failed. ``` 2021-07-23 11:42:36 +00:00			warning: unknown feature specified for `-Ctarget-feature`: `rdrand`
			`\|`
			= note: features must begin with a `+` to enable or `-` to disable it

			`warning: 1 warning emitted`