fixed MemorySanitizer

Author: tomasmark79

cmake/tmplt-sanitizer.cmake

@@ -2,7 +2,7 @@
 
 function(apply_address_sanitizer TARGET_NAME)
     target_compile_options(${TARGET_NAME} PRIVATE -fsanitize=address -fno-omit-frame-pointer)
-    if (NOT APPLE)
+    if(NOT APPLE)
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=address -static-libasan)
     else()
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=address)
@@ -12,7 +12,7 @@ endfunction()
 
 function(apply_undefined_sanitizer TARGET_NAME)
     target_compile_options(${TARGET_NAME} PRIVATE -fsanitize=undefined)
-    if (NOT APPLE)
+    if(NOT APPLE)
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=undefined -static-libubsan)
     else()
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=undefined)
@@ -21,20 +21,25 @@ endfunction()
 
 function(apply_thread_sanitizer TARGET_NAME)
     target_compile_options(${TARGET_NAME} PRIVATE -fsanitize=thread)
-    if (NOT APPLE)
+    if(NOT APPLE)
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=thread -static-libtsan)
     else()
         target_link_options(${TARGET_NAME} PRIVATE -fsanitize=thread -static-libtsan)
     endif()
 endfunction()
 
 function(apply_memory_sanitizer TARGET_NAME)
-    target_compile_options(${TARGET_NAME} PRIVATE -fsanitize=memory)
-    if (NOT APPLE)
-        target_link_options(${TARGET_NAME} PRIVATE -fsanitize=memory -static-libmsan)
-    else()
-        target_link_options(${TARGET_NAME} PRIVATE -fsanitize=memory -static-libmsan)
+    # MSan requires Clang/LLVM and is not generally supported on Apple platforms
+    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+        message(
+            FATAL_ERROR "MemorySanitizer requires Clang/LLVM (set CMAKE_CXX_COMPILER to clang++)")
+    endif()
+    if(APPLE)
+        message(FATAL_ERROR "MemorySanitizer is not supported on Apple platforms in this project")
     endif()
+    target_compile_options(${TARGET_NAME} PRIVATE -fsanitize=memory -fno-omit-frame-pointer)
+    target_link_options(${TARGET_NAME} PRIVATE -fsanitize=memory)
+    set(ENV{MSAN_OPTIONS} "verbosity=1:log_threads=1")
 endfunction()
 
 function(apply_sanitizers TARGET_NAME)
@@ -59,12 +64,14 @@ function(apply_sanitizers TARGET_NAME)
 
         if(SANITIZE_MEMORY)
             if(SANITIZE_ADDRESS OR SANITIZE_THREAD)
-                message(FATAL_ERROR "Memory sanitizer is not compatible with Address or Thread sanitizer")
+                message(
+                    FATAL_ERROR
+                        "Memory sanitizer is not compatible with Address or Thread sanitizer")
             endif()
             apply_memory_sanitizer(${TARGET_NAME})
         endif()
 
     else()
         message(WARNING "Sanitizers are only supported for GCC and Clang")
     endif()
-endfunction()
+endfunction()