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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/103267] Wrong code with ipa-sra
Date: Tue, 16 Nov 2021 08:50:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103267

--- Comment #8 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to hubicka from comment #6)
> Aha, but here is better example (reproduces same way).
> In the former one I forgot const attribute which makes it invalid.
> The testcase tests that ipa-sra is missing ECF_LOOPING_CONST_OR_PURE
> check
>=20
> static int
> __attribute__ ((noinline))
> infinite (int p)
> {
>   if (p)
>     while (1);
>   return p;
> }
> __attribute__ ((noinline))
> static void
> test(int p, int *a)
> {
>   int v =3D infinite (p);
>   if (*a && v)
>     __builtin_abort ();
> }
> test2(int *a)
> {
>   test(0,a);
> }
> main()
> {
>   test (1,0);
> }

This one is very old :) Also 4.8.0 crashes.=