diff --git a/tests/expectations/function_ptr.c b/tests/expectations/function_ptr.c
new file mode 100644
index 0000000..1041a6b
--- /dev/null
+++ b/tests/expectations/function_ptr.c
@@ -0,0 +1,14 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef void (*MyCallback)(uintptr_t a, uintptr_t b);
+
+typedef void (*MyOtherCallback)(uintptr_t a,
+                                uintptr_t lot,
+                                uintptr_t of,
+                                uintptr_t args,
+                                uintptr_t and_then_some);
+
+void my_function(MyCallback a, MyOtherCallback b);
diff --git a/tests/expectations/function_ptr.compat.c b/tests/expectations/function_ptr.compat.c
new file mode 100644
index 0000000..be3870c
--- /dev/null
+++ b/tests/expectations/function_ptr.compat.c
@@ -0,0 +1,22 @@
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+typedef void (*MyCallback)(uintptr_t a, uintptr_t b);
+
+typedef void (*MyOtherCallback)(uintptr_t a,
+                                uintptr_t lot,
+                                uintptr_t of,
+                                uintptr_t args,
+                                uintptr_t and_then_some);
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+void my_function(MyCallback a, MyOtherCallback b);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
diff --git a/tests/expectations/function_ptr.cpp b/tests/expectations/function_ptr.cpp
new file mode 100644
index 0000000..217a160
--- /dev/null
+++ b/tests/expectations/function_ptr.cpp
@@ -0,0 +1,19 @@
+#include <cstdarg>
+#include <cstdint>
+#include <cstdlib>
+#include <ostream>
+#include <new>
+
+using MyCallback = void(*)(uintptr_t a, uintptr_t b);
+
+using MyOtherCallback = void(*)(uintptr_t a,
+                                uintptr_t lot,
+                                uintptr_t of,
+                                uintptr_t args,
+                                uintptr_t and_then_some);
+
+extern "C" {
+
+void my_function(MyCallback a, MyOtherCallback b);
+
+} // extern "C"
diff --git a/tests/expectations/function_ptr.pyx b/tests/expectations/function_ptr.pyx
new file mode 100644
index 0000000..3717742
--- /dev/null
+++ b/tests/expectations/function_ptr.pyx
@@ -0,0 +1,17 @@
+from libc.stdint cimport int8_t, int16_t, int32_t, int64_t, intptr_t
+from libc.stdint cimport uint8_t, uint16_t, uint32_t, uint64_t, uintptr_t
+cdef extern from *:
+  ctypedef bint bool
+  ctypedef struct va_list
+
+cdef extern from *:
+
+  ctypedef void (*MyCallback)(uintptr_t a, uintptr_t b);
+
+  ctypedef void (*MyOtherCallback)(uintptr_t a,
+                                   uintptr_t lot,
+                                   uintptr_t of,
+                                   uintptr_t args,
+                                   uintptr_t and_then_some);
+
+  void my_function(MyCallback a, MyOtherCallback b);
diff --git a/tests/rust/function_ptr.rs b/tests/rust/function_ptr.rs
new file mode 100644
index 0000000..59adb52
--- /dev/null
+++ b/tests/rust/function_ptr.rs
@@ -0,0 +1,6 @@
+pub type MyCallback = Option<unsafe extern "C" fn(a: usize, b: usize)>;
+
+pub type MyOtherCallback = Option<unsafe extern "C" fn(a: usize, lot: usize, of: usize, args: usize, and_then_some: usize)>;
+
+#[no_mangle]
+pub extern "C" fn my_function(a: MyCallback, b: MyOtherCallback) {}