Re: [PATCH 1/2] ext4: Fix integer overflow in ext4fs_read_symlink()

Am Freitag, 12. Juli 2024, 13:19:32 CEST schrieb Heinrich Schuchardt:

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Hm, I see man built-ins in the U-Boot source. Why is this one special?

See the definition of COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW in include/linux/compiler-clang.h.

So I can't use __builtin_add_overflow() because u-boot is still supporting outdated compilers that don't offer __builtin_add_overflow()?

Maybe this is the ideal moment to raise the bar? __builtin_add_overflow() is supported by gcc >= 5.1 and clang >= 8.

Thanks, //richard