fix clippy warnings

Cargo.toml

@@ -31,3 +31,4 @@ usecxx17 = ["snmalloc-sys/usecxx17"]
 check = ["snmalloc-sys/check"]
 lto = ["snmalloc-sys/lto"]
 notls = ["snmalloc-sys/notls"]
+stats = ["snmalloc-sys/stats"]

README.md

@@ -38,6 +38,7 @@ are listed at
 - `win8compat`: Improve compatibility for old Windows platforms (removing usages of `VirtualAlloc2` and other new APIs)
 - `lto`: Links with InterProceduralOptimization/LinkTimeOptimization
 - `notls`: Enables to be loaded dynamically, thus disable tls.
+- `stats`: Enables allocation statistics.
 
 **To get the crates compiled, you need to choose either `1mib` or `16mib` to determine the chunk configuration**
 

snmalloc-sys/Cargo.toml

@@ -30,3 +30,4 @@ usecxx17 = []
 check = []
 lto = []
 notls = []
+stats = []

snmalloc-sys/build.rs

@@ -61,9 +61,6 @@ fn main() {
         if cfg!(feature = "android-lld") {
             build.define("ANDROID_LD", "lld");
         }
-        if cfg!(feature = "android-shared-stl") {
-            build.define("ANDROID_STL", "c++_shared");
-        }
         if triple.contains("aarch64") {
             build.define("ANDROID_ABI", "arm64-v8a");
         } else if triple.contains("armv7") {
@@ -198,11 +195,6 @@ fn main() {
             cfg = cfg.define("ANDROID_LD", "lld");
         }
 
-        if cfg!(feature = "android-shared-stl") {
-            println!("cargo:rustc-link-lib=dylib=c++_shared");
-            cfg = cfg.define("ANDROID_STL", "c++_shared");
-        }
-
         if triple.contains("aarch64") {
             cfg = cfg.define("ANDROID_ABI", "arm64-v8a");
         } else if triple.contains("armv7") {

snmalloc-sys/src/lib.rs

@@ -1,7 +1,7 @@
 #![no_std]
 #![allow(non_camel_case_types)]
 
-use {core::ffi::c_void, core::usize};
+use core::ffi::c_void;
 
 extern "C" {
     /// Allocate the memory with the given alignment and size.