diff --git a/Cargo.toml b/Cargo.toml
index 545c530..ac80fe7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ctest2"
-version = "0.4.2"
+version = "0.4.3"
 license = "MIT OR Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/JohnTitor/ctest2"
diff --git a/src/lib.rs b/src/lib.rs
index 51e0ceb..c5c65ca 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1168,6 +1168,7 @@ impl<'a> Generator<'a> {
 
     fn rust2c(&self, ty: &str) -> String {
         match ty {
+            "c_longdouble" | "c_long_double" => format!("long double"),
             t if t.starts_with("c_") => match &ty[2..].replace("long", " long")[..] {
                 s if s.starts_with('u') => format!("unsigned {}", &s[1..]),
                 "short" => "short".to_string(),
diff --git a/testcrate/src/t1.h b/testcrate/src/t1.h
index 2fc4e17..79afebd 100644
--- a/testcrate/src/t1.h
+++ b/testcrate/src/t1.h
@@ -172,3 +172,8 @@ typedef struct
   timeval tv;
   char message[LOG_MAX_LINE_LENGTH];
 } log_record_t;
+
+typedef struct
+{
+  long double inner;
+} LongDoubleWrap;
diff --git a/testcrate/src/t1.rs b/testcrate/src/t1.rs
index bd84cff..7489699 100644
--- a/testcrate/src/t1.rs
+++ b/testcrate/src/t1.rs
@@ -196,3 +196,14 @@ struct log_record_t {
     tv: timeval,
     message: [c_char; LOG_MAX_LINE_LENGTH],
 }
+
+#[cfg(not(any(target_pointer_width = "16", target_pointer_width = "32")))]
+#[repr(C, align(16))]
+struct LongDoubleWrap {
+    inner: u128,
+}
+#[cfg(any(target_pointer_width = "16", target_pointer_width = "32"))]
+#[repr(C)]
+struct LongDoubleWrap {
+    inner: c_double,
+}