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-rw-r--r--llvm/cmake/modules/HandleLLVMOptions.cmake4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index 496e8b3f546..0a5c02f5ba5 100644
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -182,6 +182,10 @@ elseif( LLVM_COMPILER_IS_GCC_COMPATIBLE )
if (LLVM_ENABLE_PEDANTIC)
add_llvm_definitions( -pedantic -Wno-long-long )
endif (LLVM_ENABLE_PEDANTIC)
+ check_cxx_compiler_flag("-Werror -Wcovered-switch-default" SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG)
+ if( SUPPORTS_COVERED_SWITCH_DEFAULT_FLAG )
+ add_llvm_definitions( -Wcovered-switch-default )
+ endif()
endif (LLVM_ENABLE_WARNINGS)
if (LLVM_ENABLE_WERROR)
add_llvm_definitions( -Werror )
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