revert changes to compiler/rustc_data_structures/src/stable_hasher.rs in 71dd0b9

matthiaskrgr · matthiaskrgr · commit 9e8aa21e2907 · 2021-10-13T22:01:50.000+02:00
diff --git a/compiler/rustc_data_structures/src/stable_hasher.rs b/compiler/rustc_data_structures/src/stable_hasher.rs
@@ -229,14 +229,14 @@ impl<CTX> HashStable<CTX> for ::std::num::NonZeroUsize {
 
 impl<CTX> HashStable<CTX> for f32 {
     fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {
-        let val: u32 = self.to_bits();
+        let val: u32 = unsafe { ::std::mem::transmute(*self) };
         val.hash_stable(ctx, hasher);
     }
 }
 
 impl<CTX> HashStable<CTX> for f64 {
     fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {
-        let val: u64 = self.to_bits();
+        let val: u64 = unsafe { ::std::mem::transmute(*self) };
         val.hash_stable(ctx, hasher);
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -229,14 +229,14 @@ impl<CTX> HashStable<CTX> for ::std::num::NonZeroUsize {`
`229`	`229`
`230`	`230`	`impl<CTX> HashStable<CTX> for f32 {`
`231`	`231`	`fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {`
`232`		`- let val: u32 = self.to_bits();`
	`232`	`+ let val: u32 = unsafe { ::std::mem::transmute(*self) };`
`233`	`233`	`val.hash_stable(ctx, hasher);`
`234`	`234`	`}`
`235`	`235`	`}`
`236`	`236`
`237`	`237`	`impl<CTX> HashStable<CTX> for f64 {`
`238`	`238`	`fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) {`
`239`		`- let val: u64 = self.to_bits();`
	`239`	`+ let val: u64 = unsafe { ::std::mem::transmute(*self) };`
`240`	`240`	`val.hash_stable(ctx, hasher);`
`241`	`241`	`}`
`242`	`242`	`}`