From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id DF1163857700; Fri, 15 Sep 2023 13:11:10 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DF1163857700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1694783470;
	bh=OmtEFj9xaaU9uaAo7DttGnEqhDMgMvBupj/8WeOxRcY=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=Tf4V1X+mLHyyAdgKtePAarJ9bC2ZHb44g1EruEmd1d6qbarocxUumvO9y3vgxsQan
	 osOtwKAWA2ArBrYukbo2BnT/FxapKNCjXWq13cKwJCmCBMlMpMemNtIayBBQ8YScj0
	 iP/ZtPWMuRESEPDWZg/RcXK1zzGPPMcdpSJWVDbI=
From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111425] ia64: ICE in net/ipv4/fib_semantics.c:1621:1:
 internal compiler error: Segmentation fault
Date: Fri, 15 Sep 2023 13:11:10 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 13.2.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenth at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-111425-4-IrZ97FQvgI@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-111425-4@http.gcc.gnu.org/bugzilla/>
References: <bug-111425-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111425

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reduced testcase:

enum { REFCOUNT_ADD_NOT_ZERO_OVF } refcount_warn_saturate();
int refcount_inc_not_zero_old, fib_info_num_path___trans_tmp_11,
    rtnh_ok_remaining, fib_create_info_nexthop_nh_0, fib_create_info_fi;
struct rtnexthop {
  short rtnh_len;
} fib_count_nexthops_rtnh;
struct nexthop *nh;
void atomic_read(int *v) { *(volatile typeof(_Generic(0, default : 0)) *)v;=
 }
typedef struct {
  int refs;
} refcount_t;
void refcount_inc_not_zero(refcount_t *r) {
  _Bool __trans_tmp_13;
  atomic_read(&r->refs);
  while (!__trans_tmp_13)
    if (__builtin_expect(refcount_inc_not_zero_old, 0))
      refcount_warn_saturate();
}
struct nexthop {
  refcount_t refcnt;
};
int fib_info_num_path() {
  if (__builtin_expect(!nh, 0))
    return fib_info_num_path___trans_tmp_11;
}
int rtnh_ok(struct rtnexthop *rtnh) {
  return rtnh_ok_remaining && rtnh->rtnh_len <=3D rtnh_ok_remaining;
}
void fib_create_info() {
  struct rtnexthop __trans_tmp_12;
  while (rtnh_ok(&fib_count_nexthops_rtnh))
    fib_count_nexthops_rtnh =3D __trans_tmp_12;
  if (nh)
    refcount_inc_not_zero(&nh->refcnt);
  for (; fib_info_num_path();)
    fib_create_info_nexthop_nh_0 =3D fib_create_info_fi;
}=