diff --git a/.github/workflows/asan.yml b/.github/workflows/asan.yml
index 0e16d722c8d..25cefecc359 100644
--- a/.github/workflows/asan.yml
+++ b/.github/workflows/asan.yml
@@ -53,7 +53,7 @@ jobs:
           sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh 19
+          sudo ./llvm.sh 20
 
       - name: Install Qt ${{ env.QT_VERSION }}
         uses: jurplel/install-qt-action@v4
@@ -75,8 +75,8 @@ jobs:
         run: |
           cmake -S . -B cmake.output -DCMAKE_BUILD_TYPE=RelWithDebInfo -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DUSE_QT6=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DUSE_MATCHCOMPILER=Verify -DANALYZE_ADDRESS=On -DENABLE_CHECK_INTERNAL=On -DUSE_BOOST=On -DCPPCHK_GLIBCXX_DEBUG=Off -DCMAKE_DISABLE_PRECOMPILE_HEADERS=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=On -DDISABLE_DMAKE=On -DFILESDIR= -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
         env:
-          CC: clang-19
-          CXX: clang++-19
+          CC: clang-20
+          CXX: clang++-20
 
       - name: Build cppcheck
         run: |
diff --git a/.github/workflows/clang-tidy.yml b/.github/workflows/clang-tidy.yml
index 8904e868ca9..14ecc9a3a02 100644
--- a/.github/workflows/clang-tidy.yml
+++ b/.github/workflows/clang-tidy.yml
@@ -40,8 +40,8 @@ jobs:
           sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh 19
-          sudo apt-get install -y clang-tidy-19
+          sudo ./llvm.sh 20
+          sudo apt-get install -y clang-tidy-20
 
       - name: Install Qt ${{ env.QT_VERSION }}
         uses: jurplel/install-qt-action@v4
@@ -53,14 +53,14 @@ jobs:
 
       - name: Verify clang-tidy configuration
         run: |
-          clang-tidy-19 --verify-config
+          clang-tidy-20 --verify-config
 
       - name: Prepare CMake
         run: |
           cmake -S . -B cmake.output -G "Unix Makefiles" -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DUSE_QT6=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DENABLE_CHECK_INTERNAL=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=On -DCPPCHK_GLIBCXX_DEBUG=Off -DWARNINGS_ARE_ERRORS=On
         env:
-          CC: clang-19
-          CXX: clang++-19
+          CC: clang-20
+          CXX: clang++-20
 
       - name: Prepare CMake dependencies
         run: |
diff --git a/.github/workflows/iwyu.yml b/.github/workflows/iwyu.yml
index dc6a311e7cc..5dc1a570635 100644
--- a/.github/workflows/iwyu.yml
+++ b/.github/workflows/iwyu.yml
@@ -182,8 +182,8 @@ jobs:
           sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh 19
-          sudo apt-get install -y clang-tools-19
+          sudo ./llvm.sh 20
+          sudo apt-get install -y clang-tools-20
 
       - name: Install libc++
         if: matrix.stdlib == 'libc++'
@@ -203,8 +203,8 @@ jobs:
           # TODO: why does it build dmake in the next step?
           cmake -S . -B cmake.output -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DUSE_QT6=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DENABLE_CHECK_INTERNAL=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=On -DCMAKE_DISABLE_PRECOMPILE_HEADERS=On -DCPPCHK_GLIBCXX_DEBUG=Off -DUSE_MATCHCOMPILER=Off -DEXTERNALS_AS_SYSTEM=On -DUSE_LIBCXX=${{ matrix.use_libcxx }}
         env:
-          CC: clang-19
-          CXX: clang++-19
+          CC: clang-20
+          CXX: clang++-20
 
       - name: Prepare CMake dependencies
         run: |
@@ -221,7 +221,7 @@ jobs:
       - name: clang-include-cleaner
         run: |
           # TODO: run multi-threaded
-          find $PWD/cli $PWD/lib $PWD/test $PWD/gui -maxdepth 1 -name "*.cpp" | xargs -t -n 1 clang-include-cleaner-19 --print=changes --extra-arg=-w --extra-arg=-stdlib=${{ matrix.stdlib }} -p cmake.output > clang-include-cleaner.log 2>&1
+          find $PWD/cli $PWD/lib $PWD/test $PWD/gui -maxdepth 1 -name "*.cpp" | xargs -t -n 1 clang-include-cleaner-20 --print=changes --extra-arg=-w --extra-arg=-stdlib=${{ matrix.stdlib }} -p cmake.output > clang-include-cleaner.log 2>&1
 
       - uses: actions/upload-artifact@v4
         if: success() || failure()
diff --git a/.github/workflows/tsan.yml b/.github/workflows/tsan.yml
index e12c4038c08..f6aa9b7285d 100644
--- a/.github/workflows/tsan.yml
+++ b/.github/workflows/tsan.yml
@@ -53,7 +53,7 @@ jobs:
           sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh 19
+          sudo ./llvm.sh 20
 
       - name: Install Qt ${{ env.QT_VERSION }}
         uses: jurplel/install-qt-action@v4
@@ -74,8 +74,8 @@ jobs:
         run: |
           cmake -S . -B cmake.output -DCMAKE_BUILD_TYPE=RelWithDebInfo -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DUSE_QT6=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DUSE_MATCHCOMPILER=Verify -DANALYZE_THREAD=On -DENABLE_CHECK_INTERNAL=On -DUSE_BOOST=On -DCPPCHK_GLIBCXX_DEBUG=Off -DCMAKE_DISABLE_PRECOMPILE_HEADERS=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=Off -DDISABLE_DMAKE=On -DFILESDIR= -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
         env:
-          CC: clang-19
-          CXX: clang++-19
+          CC: clang-20
+          CXX: clang++-20
 
       - name: Build cppcheck
         run: |
diff --git a/.github/workflows/ubsan.yml b/.github/workflows/ubsan.yml
index c6ce6fd6e96..03819fd1d43 100644
--- a/.github/workflows/ubsan.yml
+++ b/.github/workflows/ubsan.yml
@@ -53,7 +53,7 @@ jobs:
           sudo apt-get purge --auto-remove llvm python3-lldb-14 llvm-14
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh 19
+          sudo ./llvm.sh 20
 
       - name: Install Qt ${{ env.QT_VERSION }}
         uses: jurplel/install-qt-action@v4
@@ -75,8 +75,8 @@ jobs:
         run: |
           cmake -S . -B cmake.output -DCMAKE_BUILD_TYPE=RelWithDebInfo -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DUSE_QT6=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DUSE_MATCHCOMPILER=Verify -DANALYZE_UNDEFINED=On -DENABLE_CHECK_INTERNAL=On -DUSE_BOOST=On -DCPPCHK_GLIBCXX_DEBUG=Off -DCMAKE_DISABLE_PRECOMPILE_HEADERS=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=On -DDISABLE_DMAKE=On -DFILESDIR= -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
         env:
-          CC: clang-19
-          CXX: clang++-19
+          CC: clang-20
+          CXX: clang++-20
 
       - name: Build cppcheck
         run: |
diff --git a/cmake/clang_tidy.cmake b/cmake/clang_tidy.cmake
index 20923581f65..f8ca1902c5a 100644
--- a/cmake/clang_tidy.cmake
+++ b/cmake/clang_tidy.cmake
@@ -11,7 +11,7 @@ if(NOT CMAKE_DISABLE_PRECOMPILE_HEADERS)
         message(STATUS "Cannot use non-Clang compiler with clang-tidy when precompiled headers are enabled - skipping 'run-clang-tidy' target generation")
     endif()
 else()
-    set(RUN_CLANG_TIDY_NAMES run-clang-tidy run-clang-tidy-19 run-clang-tidy-18 run-clang-tidy-17 run-clang-tidy-16 run-clang-tidy-15 run-clang-tidy-14 run-clang-tidy-13 run-clang-tidy-12 run-clang-tidy-11 run-clang-tidy-10 run-clang-tidy-9 run-clang-tidy-8)
+    set(RUN_CLANG_TIDY_NAMES run-clang-tidy run-clang-tidy-20 run-clang-tidy-19 run-clang-tidy-18 run-clang-tidy-17 run-clang-tidy-16 run-clang-tidy-15 run-clang-tidy-14 run-clang-tidy-13 run-clang-tidy-12 run-clang-tidy-11 run-clang-tidy-10 run-clang-tidy-9 run-clang-tidy-8)
 endif()
 
 if(RUN_CLANG_TIDY_NAMES)
diff --git a/cmake/dynamic_analyzer_options.cmake b/cmake/dynamic_analyzer_options.cmake
index 1d82fc2dbf4..45d4674c3a3 100644
--- a/cmake/dynamic_analyzer_options.cmake
+++ b/cmake/dynamic_analyzer_options.cmake
@@ -31,3 +31,9 @@ if(ANALYZE_UNDEFINED)
         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=nullability")
     endif()
 endif()
+
+if(ANALYZE_TYPE)
+    add_compile_options(-fsanitize=type)
+
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=type")
+endif()
diff --git a/cmake/options.cmake b/cmake/options.cmake
index 35550edb154..5794594dda1 100644
--- a/cmake/options.cmake
+++ b/cmake/options.cmake
@@ -20,6 +20,7 @@ endif()
 option(ANALYZE_ADDRESS      "Build with AddressSanitzer to detect memory error"             OFF)
 option(ANALYZE_THREAD       "Build with ThreadSanitizer to detect data races"               OFF)
 option(ANALYZE_UNDEFINED    "Build with UndefinedBehaviorSanitizer to detect undefined behavior" OFF)
+option(ANALYZE_TYPE         "Build with TypeSanitizer to detect aliasing issues"            OFF)
 
 option(WARNINGS_ARE_ERRORS  "Treat warnings as errors"                                      OFF)
 if(WARNINGS_ARE_ERRORS)
diff --git a/cmake/printInfo.cmake b/cmake/printInfo.cmake
index 7feaf60f603..3869629f7a3 100644
--- a/cmake/printInfo.cmake
+++ b/cmake/printInfo.cmake
@@ -30,6 +30,7 @@ message(STATUS "ANALYZE_MEMORY =        ${ANALYZE_MEMORY}")
 message(STATUS "ANALYZE_ADDRESS =       ${ANALYZE_ADDRESS}")
 message(STATUS "ANALYZE_THREAD =        ${ANALYZE_THREAD}")
 message(STATUS "ANALYZE_UNDEFINED =     ${ANALYZE_UNDEFINED}")
+message(STATUS "ANALYZE_TYPE =          ${ANALYZE_TYPE}")
 message(STATUS)
 message(STATUS "WARNINGS_ARE_ERRORS =   ${WARNINGS_ARE_ERRORS}")
 message(STATUS "EXTERNALS_AS_SYSTEM =   ${EXTERNALS_AS_SYSTEM}")
diff --git a/lib/library.cpp b/lib/library.cpp
index a41f527dba9..26f313678b5 100644
--- a/lib/library.cpp
+++ b/lib/library.cpp
@@ -157,6 +157,9 @@ Library::Library(const Library& other)
 
 Library& Library::operator=(const Library& other) &
 {
+    if (this == &other)
+        return *this;
+
     mData.reset(new LibraryData(*other.mData));
     return *this;
 }