Wextra

Author: vinay-deshmukh

libc/CMakeLists.txt

@@ -34,6 +34,7 @@ if (CMAKE_BUILD_TYPE STREQUAL "Debug")
   add_definitions("-D_DEBUG")
 endif()
 
+add_compile_options("-Werror=extra")
 
 # Default to C++17
 set(CMAKE_CXX_STANDARD 17)

libc/cmake/modules/LLVMLibCTestRules.cmake

@@ -31,7 +31,7 @@ function(_get_common_test_compile_options output_var c_test flags)
     endif()
 
     # list(APPEND compile_options "-Wall")
-    # list(APPEND compile_options "-Wextra")
+    list(APPEND compile_options "-Wextra")
     # -DLIBC_WNO_ERROR=ON if you can't build cleanly with -Werror.
     if(NOT LIBC_WNO_ERROR)
       # list(APPEND compile_options "-Werror")