Bump minimal Rust version to 1.64

.github/workflows/rust.yml

@@ -1,5 +1,8 @@
 name: Rust
 
+env:
+  min_rust_version: "1.64.0"
+
 on:
   push:
     paths-ignore:
@@ -16,6 +19,28 @@ on:
       - '.gitignore'
 
 jobs:
+  min-rust-check:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install Rust Unix
+      run: |
+        if rustup --version >/dev/null 2>&1; then
+            rustup install ${{ env.min_rust_version }}
+            rustup default ${{ env.min_rust_version }}
+        else
+            curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal --default-toolchain ${{ env.min_rust_version }}
+            echo ::add-path::$HOME/.cargo/bin
+        fi
+    - name: Rust version
+      run: |
+        cargo --version
+        rustc --version
+    - name: Check
+      run: |
+        cargo check --features serde,ufmt-write
+
   check:
     if: github.event.pull_request.draft == false
     uses: DoumanAsh/douman-ci/.github/workflows/rust.yml@master

README.md

@@ -8,7 +8,7 @@ Static string buffer
 
 ## Requirements
 
-- Rust 1.59
+- Rust 1.64
 
 ## Features:
 

src/lib.rs

@@ -189,25 +189,8 @@ impl<const N: usize> StrBuf<N> {
     #[allow(clippy::missing_transmute_annotations)]
     ///Returns slice to already written data.
     pub const fn as_slice(&self) -> &[u8] {
-        //Layout is: (<ptr>, <usize>)
-        //
-        //Reference:
-        //https://github.com/rust-lang/rust/blob/6830052c7b87217886324129bffbe096e485d415/library/core/src/ptr/metadata.rs#L145=
-        #[repr(C)]
-        struct RawSlice {
-            ptr: *const u8,
-            size: usize,
-        }
-
-        debug_assert!(unsafe {
-            mem::transmute::<_, RawSlice>([3, 2, 1].as_slice()).size
-        } == 3, "RawSlice layout has been changed in compiler unexpectedly");
-
         unsafe {
-            mem::transmute(RawSlice {
-                ptr: self.as_ptr(),
-                size: self.len(),
-            })
+            slice::from_raw_parts(self.as_ptr(), self.len())
         }
     }