From 9f00f6fdc579fa01783d4963480c9244a06231de Mon Sep 17 00:00:00 2001
From: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>
Date: Tue, 20 Oct 2020 23:50:24 +0300
Subject: [PATCH] Remove artificial restriction on lifetime parameters on enums

---
 src/bindgen/parser.rs                         |  8 --------
 tests/expectations/lifetime_arg.both.c        | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.both.compat.c | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.c             | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.compat.c      | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.cpp           | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.tag.c         | 18 +++++++++++++++++-
 tests/expectations/lifetime_arg.tag.compat.c  | 18 +++++++++++++++++-
 tests/rust/lifetime_arg.rs                    |  8 +++++++-
 9 files changed, 126 insertions(+), 16 deletions(-)

diff --git a/src/bindgen/parser.rs b/src/bindgen/parser.rs
index 6e7695d..8c985b0 100644
--- a/src/bindgen/parser.rs
+++ b/src/bindgen/parser.rs
@@ -906,14 +906,6 @@ impl Parse {
         mod_cfg: Option<&Cfg>,
         item: &syn::ItemEnum,
     ) {
-        if item.generics.lifetimes().count() > 0 {
-            info!(
-                "Skip {}::{} - (has generics or lifetimes or where bounds).",
-                crate_name, &item.ident
-            );
-            return;
-        }
-
         match Enum::load(item, mod_cfg, config) {
             Ok(en) => {
                 info!("Take {}::{}.", crate_name, &item.ident);
diff --git a/tests/expectations/lifetime_arg.both.c b/tests/expectations/lifetime_arg.both.c
index ea160c6..241d362 100644
--- a/tests/expectations/lifetime_arg.both.c
+++ b/tests/expectations/lifetime_arg.both.c
@@ -7,4 +7,20 @@ typedef struct A {
   const int32_t *data;
 } A;
 
-void root(A _a);
+typedef enum E_Tag {
+  V,
+  U,
+} E_Tag;
+
+typedef struct U_Body {
+  const uint8_t *_0;
+} U_Body;
+
+typedef struct E {
+  E_Tag tag;
+  union {
+    U_Body u;
+  };
+} E;
+
+void root(A _a, E _e);
diff --git a/tests/expectations/lifetime_arg.both.compat.c b/tests/expectations/lifetime_arg.both.compat.c
index 9bb4d49..ba99107 100644
--- a/tests/expectations/lifetime_arg.both.compat.c
+++ b/tests/expectations/lifetime_arg.both.compat.c
@@ -7,11 +7,27 @@ typedef struct A {
   const int32_t *data;
 } A;
 
+typedef enum E_Tag {
+  V,
+  U,
+} E_Tag;
+
+typedef struct U_Body {
+  const uint8_t *_0;
+} U_Body;
+
+typedef struct E {
+  E_Tag tag;
+  union {
+    U_Body u;
+  };
+} E;
+
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus
 
-void root(A _a);
+void root(A _a, E _e);
 
 #ifdef __cplusplus
 } // extern "C"
diff --git a/tests/expectations/lifetime_arg.c b/tests/expectations/lifetime_arg.c
index 5bb91e7..0585056 100644
--- a/tests/expectations/lifetime_arg.c
+++ b/tests/expectations/lifetime_arg.c
@@ -7,4 +7,20 @@ typedef struct {
   const int32_t *data;
 } A;
 
-void root(A _a);
+typedef enum {
+  V,
+  U,
+} E_Tag;
+
+typedef struct {
+  const uint8_t *_0;
+} U_Body;
+
+typedef struct {
+  E_Tag tag;
+  union {
+    U_Body u;
+  };
+} E;
+
+void root(A _a, E _e);
diff --git a/tests/expectations/lifetime_arg.compat.c b/tests/expectations/lifetime_arg.compat.c
index 8b66368..743a5b8 100644
--- a/tests/expectations/lifetime_arg.compat.c
+++ b/tests/expectations/lifetime_arg.compat.c
@@ -7,11 +7,27 @@ typedef struct {
   const int32_t *data;
 } A;
 
+typedef enum {
+  V,
+  U,
+} E_Tag;
+
+typedef struct {
+  const uint8_t *_0;
+} U_Body;
+
+typedef struct {
+  E_Tag tag;
+  union {
+    U_Body u;
+  };
+} E;
+
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus
 
-void root(A _a);
+void root(A _a, E _e);
 
 #ifdef __cplusplus
 } // extern "C"
diff --git a/tests/expectations/lifetime_arg.cpp b/tests/expectations/lifetime_arg.cpp
index 5e5de0f..dc5ed99 100644
--- a/tests/expectations/lifetime_arg.cpp
+++ b/tests/expectations/lifetime_arg.cpp
@@ -8,8 +8,24 @@ struct A {
   const int32_t *data;
 };
 
+struct E {
+  enum class Tag {
+    V,
+    U,
+  };
+
+  struct U_Body {
+    const uint8_t *_0;
+  };
+
+  Tag tag;
+  union {
+    U_Body u;
+  };
+};
+
 extern "C" {
 
-void root(A _a);
+void root(A _a, E _e);
 
 } // extern "C"
diff --git a/tests/expectations/lifetime_arg.tag.c b/tests/expectations/lifetime_arg.tag.c
index 0bea2f4..07df4ea 100644
--- a/tests/expectations/lifetime_arg.tag.c
+++ b/tests/expectations/lifetime_arg.tag.c
@@ -7,4 +7,20 @@ struct A {
   const int32_t *data;
 };
 
-void root(struct A _a);
+enum E_Tag {
+  V,
+  U,
+};
+
+struct U_Body {
+  const uint8_t *_0;
+};
+
+struct E {
+  enum E_Tag tag;
+  union {
+    struct U_Body u;
+  };
+};
+
+void root(struct A _a, struct E _e);
diff --git a/tests/expectations/lifetime_arg.tag.compat.c b/tests/expectations/lifetime_arg.tag.compat.c
index 0f5b039..bb36f43 100644
--- a/tests/expectations/lifetime_arg.tag.compat.c
+++ b/tests/expectations/lifetime_arg.tag.compat.c
@@ -7,11 +7,27 @@ struct A {
   const int32_t *data;
 };
 
+enum E_Tag {
+  V,
+  U,
+};
+
+struct U_Body {
+  const uint8_t *_0;
+};
+
+struct E {
+  enum E_Tag tag;
+  union {
+    struct U_Body u;
+  };
+};
+
 #ifdef __cplusplus
 extern "C" {
 #endif // __cplusplus
 
-void root(struct A _a);
+void root(struct A _a, struct E _e);
 
 #ifdef __cplusplus
 } // extern "C"
diff --git a/tests/rust/lifetime_arg.rs b/tests/rust/lifetime_arg.rs
index 1336f73..b80fde2 100644
--- a/tests/rust/lifetime_arg.rs
+++ b/tests/rust/lifetime_arg.rs
@@ -3,6 +3,12 @@ struct A<'a> {
     data: &'a i32
 }
 
+#[repr(C)]
+enum E<'a> {
+    V,
+    U(&'a u8),
+}
+
 #[no_mangle]
-pub extern "C" fn root<'a>(_a: A<'a>)
+pub extern "C" fn root<'a>(_a: A<'a>, _e: E<'a>)
 { }