Avoiding __builtin_strlen #8157

Job	Run time
mingw (mingw64)	1m 39s
mingw (ucrt64)	2m 30s
build (windows-2019, Win32, v142, 17, Release)	1m 37s
build (windows-2019, Win32, v142, 17, Debug)	1m 32s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 39s
build (windows-2019, x64, v141, 14, Debug)	1m 35s
build (windows-2019, x64, v141, 14, Release)	2s
build (windows-2019, Win32, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1m 36s
build (windows-2019, x64, v141, 17, Debug)	1m 36s
build (windows-2019, x64, v142, 20, Release)	1m 44s
build (windows-2022, x64, v143, Debug, 20)	53s
build (windows-2019, x64, v142, 17, Release)	1m 41s
build (windows-2019, x64, v142, 17, Debug)	1m 36s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Debug)	1s
build (windows-2019, x64, v142, 17, -DBUILD_SHARED_LIBS=ON, Release)	1m 42s
build (windows-2019, x64, v142, 20, Debug)	1m 30s
build (windows-2019, x64, v141, 17, Release)	1s
	22m 54s

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