qt6-qttools/qt6-qttools-6.7.2-llvm-19.patch

From 687fc1601863ae7a67897bc3590b33bd3bdcc3bc Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Mon, 15 Jul 2024 15:17:04 +0200
Subject: [PATCH] lupdate/clang: Fix deprecation warning with llvm 18

Change-Id: Ib22dda34bfdf7a1cd0e9932eec0f6f13a912a688
Reviewed-by: Lucie Gerard <lucie.gerard@qt.io>
---
 src/linguist/lupdate/clangtoolastreader.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/linguist/lupdate/clangtoolastreader.cpp b/src/linguist/lupdate/clangtoolastreader.cpp
index 6b85c6ccb3..3db9e0d64a 100644
--- a/src/linguist/lupdate/clangtoolastreader.cpp
+++ b/src/linguist/lupdate/clangtoolastreader.cpp
@@ -782,8 +782,14 @@ bool LupdateVisitor::VisitNamedDecl(clang::NamedDecl *namedDeclaration)
     if (!fullLocation.isValid() || !fullLocation.getFileEntry())
         return true;
 
+#if (LUPDATE_CLANG_VERSION >= LUPDATE_CLANG_VERSION_CHECK(18,0,0))
+    auto fileEntry = fullLocation.getFileEntryRef();
+    if (fileEntry && !LupdatePrivate::isFileSignificant(fileEntry->getName().str()))
+        return true;
+#else
     if (!LupdatePrivate::isFileSignificant(fullLocation.getFileEntry()->getName().str()))
         return true;
+#endif
 
     qCDebug(lcClang) << "NamedDecl Name:   " << QString::fromStdString(namedDeclaration->getQualifiedNameAsString());
     qCDebug(lcClang) << "NamedDecl source: " << QString::fromStdString(namedDeclaration->getSourceRange().printToString(
---

From a2f478b20f369132de1e67b30716d5f070d7bf80 Mon Sep 17 00:00:00 2001
From: Paul Wicking <paul.wicking@qt.io>
Date: Mon, 16 Sep 2024 11:30:02 +0200
Subject: [PATCH] QDoc: Adapt clang/AST/QualTypeNames.h to upstream changes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

For compatibility reasons, QDoc carries a custom implementation of
`llvm-project.git/clang/lib/AST/QualTypeNames.cpp`. When QDoc is built
against Clang libraries from LLVM 19, a segmentation fault occurs when
generating the documentation for the Qt 3D module as part of a qt5.git
super-module documentation build.

The segmentation fault is the result of a `nullptr` being passed to
`clang::TypeName::getFullyQualifiedNestedNameSpecifier` for the
`Scope` parameter.

Upon investigation, it became clear that two changes have been made
upstream to the implementation QDoc carries a customized version of,
one of which adds a `nullptr` check. Due to the small footprint of
both changes, this patch applies both of them to QDoc's
`clang/AST/QualTypeNames.h`:

- The upstream change 16832eb58563f77d917198ad9f86db1c2ee162c9 adds a
  `nullptr` check, see https://github.com/llvm/llvm-project/pull/94084
  for details.
- The upstream change 35bfbb3b21e9874d03b730e8ce4eb98b1dcd2d28
  replaces `dyn_cast_or_null<T>(foo)` with `dyn_cast<T>(foo)` for
  never-null arguments. See
  https://github.com/llvm/llvm-project/commit/35bfbb3b21e9874d03b730e8ce4eb98b1dcd2d28
  for details.

The changes apply also when QDoc is built against Clang libraries from
LLVM 17 and 18, with both end-to-end tests passing. Given the nature of
the changes, this means these adaptations do not require being wrapped
in `#if LIBCLANG_VERSION_MAJOR` checks.

Fixes: QTBUG-128926
Pick-to: 6.8
Change-Id: I5863ca213a35042ed325971b42de2bc1e86c6457
Reviewed-by: Luca Di Sera <luca.disera@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
---
 src/qdoc/qdoc/src/qdoc/clang/AST/QualTypeNames.h | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/qdoc/qdoc/src/qdoc/clang/AST/QualTypeNames.h b/src/qdoc/qdoc/src/qdoc/clang/AST/QualTypeNames.h
index c6d331ea86..29a9250dea 100644
--- a/src/qdoc/qdoc/src/qdoc/clang/AST/QualTypeNames.h
+++ b/src/qdoc/qdoc/src/qdoc/clang/AST/QualTypeNames.h
@@ -84,8 +84,9 @@ static inline bool getFullyQualifiedTemplateName(const ASTContext &Ctx,
   assert(ArgTDecl != nullptr);
   QualifiedTemplateName *QTName = TName.getAsQualifiedTemplateName();
 
-  if (QTName && !QTName->hasTemplateKeyword()) {
-    NNS = QTName->getQualifier();
+  if (QTName &&
+      !QTName->hasTemplateKeyword() &&
+      (NNS = QTName->getQualifier())) {
     NestedNameSpecifier *QNNS = getFullyQualifiedNestedNameSpecifier(
         Ctx, NNS, WithGlobalNsPrefix);
     if (QNNS != NNS) {
@@ -288,8 +289,8 @@ static inline NestedNameSpecifier *createNestedNameSpecifierForScopeOf(
   assert(Decl);
 
   const DeclContext *DC = Decl->getDeclContext()->getRedeclContext();
-  const auto *Outer = dyn_cast_or_null<NamedDecl>(DC);
-  const auto *OuterNS = dyn_cast_or_null<NamespaceDecl>(DC);
+  const auto *Outer = dyn_cast<NamedDecl>(DC);
+  const auto *OuterNS = dyn_cast<NamespaceDecl>(DC);
   if (Outer && !(OuterNS && OuterNS->isAnonymousNamespace())) {
     if (OuterNS) {
       return createNestedNameSpecifier(Ctx, OuterNS, WithGlobalNsPrefix);
---

From 4a368a06afa5929d8674d2e94c2d7cbd6ad85d4e Mon Sep 17 00:00:00 2001
From: Paul Wicking <paul.wicking@qt.io>
Date: Fri, 13 Sep 2024 14:37:38 +0200
Subject: [PATCH] QDoc: Adapt to breaking changes in LLVM 19
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Due to upstream changes in LLVM 19, QDoc fails to compile when linked
against Clang libraries from this version of LLVM. Three issues arise;

- Two cases of passing an argument of wrong type to a function.
- One case of accessing a non-existing member of an enumeration.

One upstream change (see [0]) is responsible for two of the issues:

- `get_expression_as_string()` is modified such that it correctly
  obtains the parameter type when calling
  `get_fully_qualified_type_name()`, by appending
  `.getArgument().getAsType()` to the call to `getDefaultArgument()`.
- `get_default_value_initializer_as_string()` is modified such that it
  correctly passes the source expression to
  `get_expression_as_string()`, by appending `.getSourceExpression()`
  to the call to `getDefaultArgument()`.

Both of these changes are is incompatible with QDoc built against
Clang libraries from earlier versions of LLVM, and are therefore
wrapped in #if-ery.

Finally, LLVM 19 drops a value used in QDoc from the enumeration
`clang::TemplateName::Qualified`, see [1]. The enum value `Fully` is
removed without replacement. The enum is left with two values,
`AsWritten` and `None`. QDoc is modified such that it relies on the
former of the two. This change doesn't cause any change in output from
QDoc when built against Clang libraries from LLVM 17 and 18, and the
change is therefore not wrapped in #if-ery.

[0] - https://github.com/llvm/llvm-project/commit/e42b799bb28815431f2c5a95f7e13fde3f1b36a1
[1] - https://github.com/llvm/llvm-project/commit/9c4a716c12920

Done-with: Khem Raj <raj.khem@gmail.com>
Fixes: QTBUG-128644
Pick-to: 6.8
Change-Id: I34fbb46cf28b5676b4adda5e563d6d59fc40f602
Reviewed-by: Luca Di Sera <luca.disera@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>
---
 src/qdoc/qdoc/src/qdoc/clangcodeparser.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/qdoc/qdoc/src/qdoc/clangcodeparser.cpp b/src/qdoc/qdoc/src/qdoc/clangcodeparser.cpp
index eb3a781bc..385d651ec 100644
--- a/src/qdoc/qdoc/src/qdoc/clangcodeparser.cpp
+++ b/src/qdoc/qdoc/src/qdoc/clangcodeparser.cpp
@@ -207,9 +207,15 @@ static std::string get_expression_as_string(const clang::Expr* expression, const
  * If the parameter has no default value the empty string will be returned.
  */
 static std::string get_default_value_initializer_as_string(const clang::TemplateTypeParmDecl* parameter) {
+#if LIBCLANG_VERSION_MAJOR >= 19
+    return (parameter && parameter->hasDefaultArgument()) ?
+                get_fully_qualified_type_name(parameter->getDefaultArgument().getArgument().getAsType(), parameter->getASTContext()) :
+                "";
+#else
     return (parameter && parameter->hasDefaultArgument()) ?
                 get_fully_qualified_type_name(parameter->getDefaultArgument(), parameter->getASTContext()) :
                 "";
+#endif
 
 }
 
@@ -223,8 +229,13 @@ static std::string get_default_value_initializer_as_string(const clang::Template
  * If the parameter as no default value the empty string will be returned.
  */
 static std::string get_default_value_initializer_as_string(const clang::NonTypeTemplateParmDecl* parameter) {
+#if LIBCLANG_VERSION_MAJOR >= 19
+    return (parameter && parameter->hasDefaultArgument()) ?
+        get_expression_as_string(parameter->getDefaultArgument().getSourceExpression(), parameter->getASTContext()) : "";
+#else
     return (parameter && parameter->hasDefaultArgument()) ?
         get_expression_as_string(parameter->getDefaultArgument(), parameter->getASTContext()) : "";
+#endif
 
 }
 
@@ -244,7 +255,7 @@ static std::string get_default_value_initializer_as_string(const clang::Template
         const clang::TemplateName template_name = parameter->getDefaultArgument().getArgument().getAsTemplate();
 
         llvm::raw_string_ostream ss{default_value};
-        template_name.print(ss, parameter->getASTContext().getPrintingPolicy(), clang::TemplateName::Qualified::Fully);
+        template_name.print(ss, parameter->getASTContext().getPrintingPolicy(), clang::TemplateName::Qualified::AsWritten);
     }
 
     return default_value;