Merge branch 'main' into user/sumita/dot2add

Author: sumitsays

.ci/compute_projects_test.py

@@ -161,7 +161,7 @@ def test_top_level_file(self):
         self.assertEqual(env_variables["runtimes_to_build"], "")
         self.assertEqual(env_variables["runtimes_check_targets"], "")
 
-    def test_blah(self):
+    def test_exclude_runtiems_in_projects(self):
         env_variables = compute_projects.get_env_variables(
             [".ci/compute_projects.py", "libcxx/CMakeLists.txt"], "Linux"
         )

.github/new-prs-labeler.yml

@@ -637,6 +637,7 @@ hlsl:
   - clang/lib/Sema/HLSLExternalSemaSource.cpp
   - clang/lib/Sema/SemaHLSL.cpp
   - clang/lib/CodeGen/CGHLSLRuntime.*
+  - clang/lib/CodeGen/CGHLSLBuiltins.cpp
   - llvm/include/llvm/Frontend/HLSL/**
   - llvm/lib/Frontend/HLSL/**
 

.github/workflows/libcxx-build-and-test.yaml

@@ -100,10 +100,6 @@ jobs:
           - config: 'generic-cxx26'
             cc: 'clang-19'
             cxx: 'clang++-19'
-          # Release transition
-          - config: 'generic-cxx23'
-            cc: 'clang-18'
-            cxx: 'clang++-18'
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: ${{ matrix.config }}

clang/docs/ReleaseNotes.rst

@@ -359,6 +359,7 @@ Bug Fixes to C++ Support
 - Fixed C++20 aggregate initialization rules being incorrectly applied in certain contexts. (#GH131320)
 - Clang was previously coalescing volatile writes to members of volatile base class subobjects.
   The issue has been addressed by propagating qualifiers during derived-to-base conversions in the AST. (#GH127824)
+- Correctly propagates the instantiated array type to the ``DeclRefExpr`` that refers to it. (#GH79750), (#GH113936), (#GH133047)
 - Fixed a Clang regression in C++20 mode where unresolved dependent call expressions were created inside non-dependent contexts (#GH122892)
 - Clang now emits the ``-Wunused-variable`` warning when some structured bindings are unused
   and the ``[[maybe_unused]]`` attribute is not applied. (#GH125810)

clang/lib/AST/NestedNameSpecifier.cpp

@@ -289,6 +289,7 @@ NestedNameSpecifier::translateToType(const ASTContext &Context) const {
     // These are not representable as types.
     return nullptr;
   }
+  llvm_unreachable("Unhandled SpecifierKind enum");
 }
 
 /// Print this nested name specifier to the given output