On Fri, Jul 12, 2024 at 01:26:35PM +0200, Richard Weinberger wrote: > Am Freitag, 12. Juli 2024, 13:19:32 CEST schrieb Heinrich Schuchardt: > > > 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 u-boot is still supporting outdated compilers that don't offer 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.
We already fail on gcc older than 6, for ARM. And we don't have a minimum clang specifically, but it's probably newer than 8. So this should be fine. -- Tom
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