From f6f427039aff3e668543724bb951d42733d3ab83 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matheus=20Catarino=20Fran=C3=A7a?=
 <matheus-catarino@hotmail.com>
Date: Sat, 14 May 2022 13:20:25 -0300
Subject: [PATCH] Fix functors

---
 src/bindgen/cdecl.rs | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/src/bindgen/cdecl.rs b/src/bindgen/cdecl.rs
index 3176cb255..8f8a3f0a2 100644
--- a/src/bindgen/cdecl.rs
+++ b/src/bindgen/cdecl.rs
@@ -220,6 +220,7 @@ impl CDecl {
 
         // Write the left part of declarators before the identifier
         let mut iter_rev = self.declarators.iter().rev().peekable();
+        let mut is_functors = false;
 
         #[allow(clippy::while_let_on_iterator)]
         while let Some(declarator) = iter_rev.next() {
@@ -249,11 +250,7 @@ impl CDecl {
                             out.write("const ");
                         }
                     }
-                    if !is_nullable
-                        && !is_ref
-                        && config.language != Language::Cython
-                        && config.language != Language::Zig
-                    {
+                    if !is_nullable && !is_ref && config.language != Language::Cython {
                         if let Some(attr) = &config.pointer.non_null_attribute {
                             write!(out, "{} ", attr);
                         }
@@ -268,6 +265,7 @@ impl CDecl {
                     if next_is_pointer && config.language != Language::Zig {
                         out.write("(");
                     }
+                    is_functors = true;
                 }
             }
         }
@@ -293,19 +291,21 @@ impl CDecl {
         while let Some(declarator) = iter.next() {
             match *declarator {
                 CDeclarator::Ptr { .. } => {
+                    last_was_pointer = true;
+
                     if config.language == Language::Zig {
                         if self.type_name.contains("u8")
+                            || self.type_name.contains("const u8")
                             || self.type_name.contains("CStr")
                             || self.type_name.contains("c_char")
                         {
                             write!(out, ": ?[*:0]{}", self.type_name);
-                        } else if self.type_name.contains("const u8") {
-                            write!(out, ": ?[*:0]{}", self.type_name);
+                        } else if is_functors {
+                            out.write(": ?fn");
                         } else {
                             write!(out, ": ?*{}", self.type_name);
                         }
                     }
-                    last_was_pointer = true;
                 }
                 CDeclarator::Array(ref constant) => {
                     if last_was_pointer {
@@ -331,6 +331,7 @@ impl CDecl {
                     if last_was_pointer && config.language != Language::Zig {
                         out.write(")");
                     }
+                    is_functors = true;
 
                     out.write("(");
                     if args.is_empty() && config.language == Language::C {