Merge pull request #27 from aganm/attribute #20

Job	Run time
build (ubuntu-latest, Debug, address)	23s
build (ubuntu-latest, Debug, memory)	28s
build (ubuntu-latest, Debug, undefined)	29s
build (ubuntu-latest, RelWithDebInfo, address)	21s
build (ubuntu-latest, RelWithDebInfo, memory)	25s
build (ubuntu-latest, RelWithDebInfo, undefined)	28s
build (ubuntu-latest, MinSizeRel, address)	29s
build (ubuntu-latest, MinSizeRel, memory)	25s
build (ubuntu-latest, MinSizeRel, undefined)	19s
build (ubuntu-latest, Release, address)	23s
build (ubuntu-latest, Release, memory)	36s
build (ubuntu-latest, Release, undefined)	35s
build (macOS-latest, Debug, address)	33s
build (macOS-latest, Debug, undefined)	43s
build (macOS-latest, RelWithDebInfo, address)	42s
build (macOS-latest, RelWithDebInfo, undefined)	30s
build (macOS-latest, MinSizeRel, address)	43s
build (macOS-latest, MinSizeRel, undefined)	30s
build (macOS-latest, Release, address)	40s
build (macOS-latest, Release, undefined)	33s
	10m 15s

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