Fix dropping issues with StaticVec and use it everywhere.

src/unsafe.rs

@@ -47,9 +47,9 @@ pub fn unsafe_cast_box<X: Variant, T: Variant>(item: Box<X>) -> Result<Box<T>, B
 /// current `Scope` without cloning the variable name.  Doing this is safe because all local
 /// variables in the `Scope` are cleared out before existing the block.
 ///
-/// Force-casting a local variable lifetime to the current `Scope`'s larger lifetime saves
+/// Force-casting a local variable's lifetime to the current `Scope`'s larger lifetime saves
 /// on allocations and string cloning, thus avoids us having to maintain a chain of `Scope`'s.
-pub fn unsafe_cast_var_name<'s>(name: &str, state: &State) -> Cow<'s, str> {
+pub fn unsafe_cast_var_name_to_lifetime<'s>(name: &str, state: &State) -> Cow<'s, str> {
     // If not at global level, we can force-cast
     if state.scope_level > 0 {
         // WARNING - force-cast the variable name into the scope's lifetime to avoid cloning it
@@ -62,7 +62,7 @@ pub fn unsafe_cast_var_name<'s>(name: &str, state: &State) -> Cow<'s, str> {
     }
 }
 
-/// Provide a type instance that is memory-zeroed.
-pub fn unsafe_zeroed<T>() -> T {
-    unsafe { mem::MaybeUninit::zeroed().assume_init() }
+/// Provide a type instance that is uninitialized.
+pub fn unsafe_uninit<T>() -> T {
+    unsafe { mem::MaybeUninit::uninit().assume_init() }
 }