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Merge pull request #8573 from ethereum/add-move-specific-warnings

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[build-system] Add -Wpessimizing-move & -Wredundant-move warnings.
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Daniel Kirchner 2020-04-03 16:58:26 +02:00 committed by GitHub
commit 1b4bbdc5ff
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1 changed files with 11 additions and 0 deletions
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cmake/EthCompilerSettings.cmake
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@ -26,6 +26,17 @@ eth_add_cxx_compiler_flag_if_supported(-Wimplicit-fallthrough)
# Prevent the path of the source directory from ending up in the binary via __FILE__ macros.
eth_add_cxx_compiler_flag_if_supported("-fmacro-prefix-map=${CMAKE_SOURCE_DIR}=/solidity")
# -Wpessimizing-move warns when a call to std::move would prevent copy elision
# if the argument was not wrapped in a call. This happens when moving a local
# variable in a return statement when the variable is the same type as the
# return type or using a move to create a new object from a temporary object.
eth_add_cxx_compiler_flag_if_supported(-Wpessimizing-move)
# -Wredundant-move warns when an implicit move would already be made, so the
# std::move call is not needed, such as when moving a local variable in a return
# that is different from the return type.
eth_add_cxx_compiler_flag_if_supported(-Wredundant-move)
if (("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") OR ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang"))
# Enables all the warnings about constructions that some users consider questionable,
# and that are easy to avoid. Also enable some extra warning flags that are not