[systemd-devel] [RFC 13/25] shared/missing.h: check for missing strndupa

[Cristian Rodríguez]

El 18/09/14 a las #4, Emil Renner Berthing escribió:

> +#if !HAVE_DECL_STRNDUPA
> +#define strndupa(s, n) \
> +  ({ \
> +    const char *__old = (s); \
> +    size_t __len = strnlen(__old, (n)); \
> +    char *__new = (char *)alloca(__len + 1); \
> +    __new[__len] = '\0'; \
> +    (char *)memcpy(__new, __old, __len); \
> +  })
> +#endif


No, get strndupa implemented in the C library instead.