[PATCH] elf: Assert range of ns argument in _dl_debug_initialize

[Andreas Schwab]

On Jun 23 2021, Florian Weimer via Libc-alpha wrote:

> @@ -49,7 +51,11 @@ _dl_debug_initialize (ElfW(Addr) ldbase, Lmid_t ns)
>    if (ns == LM_ID_BASE)
>      r = &_r_debug;
>    else
> -    r = &GL(dl_ns)[ns]._ns_debug;
> +    {
> +      assert (ns >= 0);
> +      assert (ns < array_length (GL (dl_ns)));

The asserts can be combined.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
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