up to 102.11.1

[packages/thunderbird.git] / llvm16-bindgen.patch

Submitted By:            Douglas R. Reno <renodr at linuxfromscratch dot org>
Date:                    2022-03-19
Initial Package Version: 102.9.0esr
Upstream Status:         Applied
Origin:                  rust-bindgen upstream (#2338 and #2319), Self
Description:             Updates the bundled rust-bindgen crate to be compatible
                         with Clang/LLVM 16.

                         Without this patch, you will encounter "not a valid
                         Ident" errors when building Firefox, and it will come
                         out of fallback.rs in proc-macro2. This references
                         mfbt/Vector.h (symlinked to 
                         firefox-build-dir/dist/include/mozilla/Vector.h) in
                         it's error output, but it is because LLVM changed how
                         it reports anonymous items.

diff -Naurp firefox-102.9.0.orig/third_party/rust/bindgen/.cargo-checksum.json firefox-102.9.0/third_party/rust/bindgen/.cargo-checksum.json
--- firefox-102.9.0.orig/third_party/rust/bindgen/.cargo-checksum.json	2023-03-09 17:59:38.000000000 -0600
+++ firefox-102.9.0/third_party/rust/bindgen/.cargo-checksum.json	2023-03-19 21:04:15.981453212 -0500
@@ -1 +1 @@
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\ No newline at end of file
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diff -Naurp firefox-102.9.0.orig/third_party/rust/bindgen/src/clang.rs firefox-102.9.0/third_party/rust/bindgen/src/clang.rs
--- firefox-102.9.0.orig/third_party/rust/bindgen/src/clang.rs	2023-03-09 17:59:38.000000000 -0600
+++ firefox-102.9.0/third_party/rust/bindgen/src/clang.rs	2023-03-19 20:26:47.405305678 -0500
@@ -54,6 +54,11 @@ impl Cursor {
         unsafe { clang_isDeclaration(self.kind()) != 0 }
     }
 
+    /// Is this cursor's referent an anonymous record or so?
+    pub fn is_anonymous(&self) -> bool {
+        unsafe { clang_Cursor_isAnonymous(self.x) != 0 }
+    }
+
     /// Get this cursor's referent's spelling.
     pub fn spelling(&self) -> String {
         unsafe { cxstring_into_string(clang_getCursorSpelling(self.x)) }
diff -Naurp firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/comp.rs firefox-102.9.0/third_party/rust/bindgen/src/ir/comp.rs
--- firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/comp.rs	2023-03-09 17:59:38.000000000 -0600
+++ firefox-102.9.0/third_party/rust/bindgen/src/ir/comp.rs	2023-03-19 20:27:20.660487032 -0500
@@ -1372,8 +1372,7 @@ impl CompInfo {
 
                     // A declaration of an union or a struct without name could
                     // also be an unnamed field, unfortunately.
-                    if cur.spelling().is_empty() &&
-                        cur.kind() != CXCursor_EnumDecl
+                    if cur.is_anonymous() && cur.kind() != CXCursor_EnumDecl
                     {
                         let ty = cur.cur_type();
                         let offset = cur.offset_of_field().ok();
diff -Naurp firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/ty.rs firefox-102.9.0/third_party/rust/bindgen/src/ir/ty.rs
--- firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/ty.rs	2023-03-09 17:59:38.000000000 -0600
+++ firefox-102.9.0/third_party/rust/bindgen/src/ir/ty.rs	2023-03-19 21:02:47.947103359 -0500
@@ -737,7 +737,12 @@ impl Type {
 
         let layout = ty.fallible_layout(ctx).ok();
         let cursor = ty.declaration();
-        let mut name = cursor.spelling();
+        let is_anonymous = cursor.is_anonymous();
+        let mut name = if is_anonymous {
+            None
+        } else {
+            Some(cursor.spelling()).filter(|n| !n.is_empty())
+        };
 
         debug!(
             "from_clang_ty: {:?}, ty: {:?}, loc: {:?}",
@@ -771,7 +776,7 @@ impl Type {
             if is_canonical_objcpointer && is_template_type_param {
                 // Objective-C generics are just ids with fancy name.
                 // To keep it simple, just name them ids
-                name = "id".to_owned();
+                name = Some("id".to_owned());
             }
         }
 
@@ -900,7 +905,7 @@ impl Type {
                                         return Err(ParseError::Recurse);
                                     }
                                 } else {
-                                    name = location.spelling();
+                                    name = Some(location.spelling());
                                 }
 
                                 let complex = CompInfo::from_ty(
@@ -942,7 +947,7 @@ impl Type {
                                                 CXType_Typedef
                                             );
 
-                                            name = current.spelling();
+                                            name = Some(location.spelling());
 
                                             let inner_ty = cur
                                                 .typedef_type()
@@ -1126,10 +1131,10 @@ impl Type {
                 CXType_Enum => {
                     let enum_ = Enum::from_ty(ty, ctx).expect("Not an enum?");
 
-                    if name.is_empty() {
+                    if !is_anonymous {
                         let pretty_name = ty.spelling();
                         if clang::is_valid_identifier(&pretty_name) {
-                            name = pretty_name;
+                            name = Some(pretty_name);
                         }
                     }
 
@@ -1144,12 +1149,12 @@ impl Type {
                     )
                     .expect("Not a complex type?");
 
-                    if name.is_empty() {
+                    if !is_anonymous {
                         // The pretty-printed name may contain typedefed name,
                         // but may also be "struct (anonymous at .h:1)"
                         let pretty_name = ty.spelling();
                         if clang::is_valid_identifier(&pretty_name) {
-                            name = pretty_name;
+                            name = Some(pretty_name);
                         }
                     }
 
@@ -1161,8 +1166,7 @@ impl Type {
                         location,
                         None,
                         ctx,
-                    )
-                    .expect("Not able to resolve vector element?");
+                    )?;
                     TypeKind::Vector(inner, ty.num_elements().unwrap())
                 }
                 CXType_ConstantArray => {
@@ -1189,7 +1193,9 @@ impl Type {
                 CXType_ObjCClass | CXType_ObjCInterface => {
                     let interface = ObjCInterface::from_ty(&location, ctx)
                         .expect("Not a valid objc interface?");
-                    name = interface.rust_name();
+                    if !is_anonymous {
+                        name = Some(interface.rust_name());
+                    }
                     TypeKind::ObjCInterface(interface)
                 }
                 CXType_Dependent => {
@@ -1207,7 +1213,7 @@ impl Type {
             }
         };
 
-        let name = if name.is_empty() { None } else { Some(name) };
+        name = name.filter(|n| !n.is_empty());
 
         let is_const = ty.is_const() ||
             (ty.kind() == CXType_ConstantArray &&
diff -Naurp firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/var.rs firefox-102.9.0/third_party/rust/bindgen/src/ir/var.rs
--- firefox-102.9.0.orig/third_party/rust/bindgen/src/ir/var.rs	2023-03-09 17:59:38.000000000 -0600
+++ firefox-102.9.0/third_party/rust/bindgen/src/ir/var.rs	2023-03-19 21:03:37.413299390 -0500
@@ -301,11 +301,11 @@ impl ClangSubItemParser for Var {
                 let ty = match Item::from_ty(&ty, cursor, None, ctx) {
                     Ok(ty) => ty,
                     Err(e) => {
-                        assert_eq!(
-                            ty.kind(),
-                            CXType_Auto,
+                        assert!(
+                            matches!(ty.kind(), CXType_Auto | CXType_Unexposed),
                             "Couldn't resolve constant type, and it \
-                             wasn't an nondeductible auto type!"
+                             wasn't an nondeductible auto type or unexposed \
+                             type!"
                         );
                         return Err(e);
                     }