Fix #114: Rust 2024 compatibility

Author: nunoplopes

cpp2rust/converter/converter.cpp

@@ -284,7 +284,9 @@ Converter::MaterializeTemp(const std::string &binding_name,
 
   auto binding =
       std::format("{} mut {} : {} = {};", decl, binding_name, type_str, value);
-  auto ref = std::format("& mut {}", binding_name);
+  auto ref = in_const_initializer_
+                 ? std::format("& mut *& raw mut {}", binding_name)
+                 : std::format("& mut {}", binding_name);
   return {binding, ref};
 }
 

tests/lit/lit/formats/Cpp2RustTest.py

@@ -247,8 +247,6 @@ def build_rust(self):
             "strip=symbols",
             "-C",
             "panic=abort",
-            "-W",  ## TODO: remove this once we fix the errors in the generated code
-            "static_mut_refs",
             "--out-dir",
             str(self.tmp_dir),
             "-L",

tests/unit/out/unsafe/rvalue_ref_global.rs

@@ -8,7 +8,7 @@ use std::os::fd::{AsFd, FromRawFd, IntoRawFd};
 use std::rc::Rc;
 static mut __tmp_0: i32 = 5;
 pub static mut g_0: std::cell::LazyCell<*mut i32> =
-    std::cell::LazyCell::new(|| unsafe { &mut __tmp_0 });
+    std::cell::LazyCell::new(|| unsafe { &mut *&raw mut __tmp_0 });
 pub fn main() {
     unsafe {
         __cpp2rust_init_globals();