diff --git a/c-gull/src/use_libc.rs b/c-gull/src/use_libc.rs
index d370f5a..1f3d352 100644
--- a/c-gull/src/use_libc.rs
+++ b/c-gull/src/use_libc.rs
@@ -59,16 +59,14 @@ macro_rules! libc {
 #[cfg(all(feature = "take-charge", feature = "thread"))]
 macro_rules! libc_type {
     ($name:ident, $libc:ident) => {
-        #[cfg(test)]
-        static_assertions::const_assert_eq!(
-            core::mem::size_of::<$name>(),
-            core::mem::size_of::<libc::$libc>()
-        );
-        #[cfg(test)]
-        static_assertions::const_assert_eq!(
-            core::mem::align_of::<$name>(),
-            core::mem::align_of::<libc::$libc>()
-        );
+        const _: () = {
+            if core::mem::size_of::<$name>() != core::mem::size_of::<libc::$libc>() {
+                panic!();
+            }
+            if core::mem::align_of::<$name>() != core::mem::align_of::<libc::$libc>() {
+                panic!();
+            }
+        };
     };
 }
 
diff --git a/c-scape/src/todo.rs b/c-scape/src/todo.rs
index 2f1af33..92656d0 100644
--- a/c-scape/src/todo.rs
+++ b/c-scape/src/todo.rs
@@ -293,6 +293,10 @@ unsafe extern "C" fn strftime() {
     todo!("strftime")
 }
 #[no_mangle]
+unsafe extern "C" fn wcsftime() {
+    todo!("wcsftime")
+}
+#[no_mangle]
 unsafe extern "C" fn __isoc99_scanf() {
     todo!("__isoc99_scanf")
 }
@@ -1169,3 +1173,11 @@ unsafe extern "C" fn backtrace() {
 unsafe extern "C" fn backtrace_symbols() {
     todo!("backtrace_symbols")
 }
+#[no_mangle]
+unsafe extern "C" fn getwc() {
+    todo!("getwc")
+}
+#[no_mangle]
+unsafe extern "C" fn putwc() {
+    todo!("putwc")
+}
diff --git a/c-scape/src/todo/locale.rs b/c-scape/src/todo/locale.rs
index bdcf6c5..0002f59 100644
--- a/c-scape/src/todo/locale.rs
+++ b/c-scape/src/todo/locale.rs
@@ -40,3 +40,11 @@ unsafe extern "C" fn strtoll_l() {
 unsafe extern "C" fn strtoull_l() {
     todo!("strtoull_l")
 }
+#[no_mangle]
+unsafe extern "C" fn wcsxfrm() {
+    todo!("wcsxfrm")
+}
+#[no_mangle]
+unsafe extern "C" fn wcscoll() {
+    todo!("wcscoll")
+}
diff --git a/c-scape/src/todo/wchar.rs b/c-scape/src/todo/wchar.rs
index 1b620c0..1cba1b5 100644
--- a/c-scape/src/todo/wchar.rs
+++ b/c-scape/src/todo/wchar.rs
@@ -280,3 +280,11 @@ unsafe extern "C" fn iswupper() {
 unsafe extern "C" fn iswxdigit() {
     todo!("iswxdigit")
 }
+#[no_mangle]
+unsafe extern "C" fn towupper() {
+    todo!("towupper")
+}
+#[no_mangle]
+unsafe extern "C" fn towlower() {
+    todo!("towlower")
+}
diff --git a/c-scape/src/use_libc.rs b/c-scape/src/use_libc.rs
index d370f5a..1f3d352 100644
--- a/c-scape/src/use_libc.rs
+++ b/c-scape/src/use_libc.rs
@@ -59,16 +59,14 @@ macro_rules! libc {
 #[cfg(all(feature = "take-charge", feature = "thread"))]
 macro_rules! libc_type {
     ($name:ident, $libc:ident) => {
-        #[cfg(test)]
-        static_assertions::const_assert_eq!(
-            core::mem::size_of::<$name>(),
-            core::mem::size_of::<libc::$libc>()
-        );
-        #[cfg(test)]
-        static_assertions::const_assert_eq!(
-            core::mem::align_of::<$name>(),
-            core::mem::align_of::<libc::$libc>()
-        );
+        const _: () = {
+            if core::mem::size_of::<$name>() != core::mem::size_of::<libc::$libc>() {
+                panic!();
+            }
+            if core::mem::align_of::<$name>() != core::mem::align_of::<libc::$libc>() {
+                panic!();
+            }
+        };
     };
 }