Is is bug?

[LIU Hao]

在 2026-9-19 18:20, Jakub Juszczakiewicz via Gcc-help 写道:
> Thanks for quick reply!
> Ok, so I need to do this check in other way. It's good to now.

See https://gcc.gnu.org/onlinedocs/gcc/Integer-Overflow-Builtins.html

    int kit_sub_int_64(int64_t * output, const int64_t * a, const int64_t * b)
    {
      return __builtin_sub_overflow(*a, *b, output);
    }

-- 
Best regards,
LIU Hao

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