add casts, comments #8336

Job	Run time
MacOS (macOS-13)	42m 48s
MacOS (macOS-14)	21m 51s
Windows (check)	26m 24s
Linux (gcc, debian:stable, intel)	33m 58s
Windows (installer)	21m 15s
Linux (gcc, debian:stable, arm)	46m 6s
Linux (gcc, debian:testing, intel)	32m 48s
Linux (gcc, debian:testing, arm)	47m 44s
Linux (clang, debian:stable, intel)	35m 43s
Linux (clang, debian:stable, arm)	45m 13s
Linux (clang, debian:testing, intel)	35m 36s
Linux (clang, debian:testing, arm)	46m 16s
	7h 15m 42s

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