Add leak sanitizer

Author: aobolensk

.github/workflows/ubuntu.yml

@@ -386,7 +386,8 @@ jobs:
         run: >
           cmake -S . -B build -G Ninja
           -D CMAKE_C_COMPILER_LAUNCHER=ccache -D CMAKE_CXX_COMPILER_LAUNCHER=ccache
-          -D CMAKE_BUILD_TYPE=RELEASE -D ENABLE_ADDRESS_SANITIZER=ON -D ENABLE_UB_SANITIZER=ON
+          -D CMAKE_BUILD_TYPE=RELEASE
+          -D ENABLE_ADDRESS_SANITIZER=ON -D ENABLE_UB_SANITIZER=ON -D ENABLE_LEAK_SANITIZER=ON
           -D CMAKE_INSTALL_PREFIX=install
         env:
           CC: clang-20

cmake/sanitizers.cmake

@@ -10,6 +10,11 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     add_link_options(-fsanitize=undefined -fno-sanitize=signed-integer-overflow)
     message(STATUS "Enabled UB sanitizer")
   endif()
+  if (ENABLE_LEAK_SANITIZER)
+    add_compile_options(-fsanitize=leak)
+    add_link_options(-fsanitize=leak)
+    message(STATUS "Enabled leak sanitizer")
+  endif()
 else()
   message(WARNING "Sanitizers are supported on gcc and clang compilers only!")
 endif()