impl: specialize impl of ToString on bool

Author: Ezrashaw

alloc/src/string.rs

@@ -2548,6 +2548,15 @@ impl ToString for char {
     }
 }
 
+#[cfg(not(no_global_oom_handling))]
+#[stable(feature = "bool_to_string_specialization", since = "CURRENT_RUSTC_VERSION")]
+impl ToString for bool {
+    #[inline]
+    fn to_string(&self) -> String {
+        String::from(if *self { "true" } else { "false" })
+    }
+}
+
 #[cfg(not(no_global_oom_handling))]
 #[stable(feature = "u8_to_string_specialization", since = "1.54.0")]
 impl ToString for u8 {