fix compatibility issues with `gcc-14.x` #116

Job	Run time
Ubuntu 20.04 (compiler: clang, host: gcc)	1m 23s
Ubuntu 22.04 (compiler: clang, host: gcc)	4m 5s
Ubuntu 20.04 (compiler: clang, host: llvm)	1m 31s
Ubuntu 22.04 (compiler: clang, host: llvm)	5m 8s
Ubuntu 20.04 (compiler: gcc, host: gcc)	1m 35s
Ubuntu 22.04 (compiler: gcc, host: gcc)	4m 49s
Ubuntu 20.04 (compiler: gcc, host: llvm)	1m 36s
Ubuntu 22.04 (compiler: gcc, host: llvm)	5m 31s
Ubuntu 22.04 (compiler: gcc, host: gcc-expensive, variant: expensive tests)	21m 39s
Ubuntu 22.04 (compiler: gcc, host: gcc-debug, variant: debug build)	9m 32s
Ubuntu 22.04 (compiler: clang, host: llvm-debug, variant: debug build)	12m 33s
	1h 9m 22s

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