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CMake: make unsequenced modifications an error 

They not only result in discrepancies between different compiler,
but trigger undefined behavior. Avoid them by having them break
the CMake build and CI.
pull/832/head
Ahmad Fatoum 5 years ago
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      CMakeLists.txt

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CMakeLists.txt View File

@ -19,6 +19,7 @@ endif()
include(AddIfFlagCompiles) include(AddIfFlagCompiles)
add_if_flag_compiles(-Werror=pointer-arith CMAKE_C_FLAGS) add_if_flag_compiles(-Werror=pointer-arith CMAKE_C_FLAGS)
add_if_flag_compiles(-Werror=implicit-function-declaration CMAKE_C_FLAGS) add_if_flag_compiles(-Werror=implicit-function-declaration CMAKE_C_FLAGS)
add_if_flag_compiles(-Werror=unsequenced CMAKE_C_FLAGS)
# src/external/jar_xm.h does shady stuff # src/external/jar_xm.h does shady stuff
add_if_flag_compiles(-fno-strict-aliasing CMAKE_C_FLAGS) add_if_flag_compiles(-fno-strict-aliasing CMAKE_C_FLAGS)

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