Add -fprofile-update=atomic

Author: zfergus

CMakeLists.txt

@@ -258,8 +258,12 @@ if(IPC_TOOLKIT_WITH_CODE_COVERAGE AND CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
   target_compile_options(ipc_toolkit PUBLIC
     -g         # generate debug info
     --coverage # sets all required flags
+    -fprofile-update=atomic
+  )
+  target_link_options(ipc_toolkit PUBLIC
+    --coverage
+    -fprofile-update=atomic
   )
-  target_link_options(ipc_toolkit PUBLIC --coverage)
 endif()
 
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