fix: resolve path types for 'both' style

tests/rust/forward_declaration.rs

@@ -0,0 +1,21 @@
+#[repr(C)]
+struct TypeInfo {
+    data: TypeData,
+}
+
+#[repr(C)]
+enum TypeData {
+    Primitive,
+    Struct(StructInfo),
+}
+
+#[repr(C)]
+struct StructInfo {
+    fields: *const *const TypeInfo, // requires forward declaration
+    num_fields: usize,
+}
+
+#[no_mangle]
+pub extern "C" fn root(
+    x: TypeInfo,
+) {}

tests/rust/forward_declaration.toml

@@ -0,0 +1,23 @@
+header = """
+#if 0
+''' '
+#endif
+#if defined(CBINDGEN_STYLE_TYPE)
+/* ANONYMOUS STRUCTS DO NOT SUPPORT FORWARD DECLARATIONS!
+#endif
+#if 0
+' '''
+#endif
+"""
+
+trailer = """
+#if 0
+''' '
+#endif
+#if defined(CBINDGEN_STYLE_TYPE)
+*/
+#endif
+#if 0
+' '''
+#endif
+"""