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 06AD5395B442; Thu, 23 Apr 2020 18:55:06 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 06AD5395B442
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1587668106;
 bh=UGYfmHPMgdjt5tQ9xEPhvVQo3i+g1cZ2VAE19gWWvKM=;
 h=From:To:Subject:Date:From;
 b=IiD517XdWbW/nY6KI7TX4+NolwGjC8454vqVc08oMLFyfqSbV9u1thMxUZdrWVH06
 esY0YBbW+4HywjrPDMIFZI6UHTe7y14EJ4iFKoOJN6GywxEcsYhwjsCTQ2VtQJCafp
 mgkdtreUPUfZQNM5+2Y12I4ETjHeWjVPp7RHtc4c=
From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/94736] New: Missing ENDBR at label
Date: Thu, 23 Apr 2020 18:55:05 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: target
X-Bugzilla-Version: 10.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: hjl.tools at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
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: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter cc target_milestone
 cf_gcctarget
Message-ID: <bug-94736-4@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
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <http://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Thu, 23 Apr 2020 18:55:06 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94736

            Bug ID: 94736
           Summary: Missing ENDBR at label
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: crazylht at gmail dot com
  Target Milestone: ---
            Target: i386,x86-64

[hjl@gnu-cfl-2 gcc]$ cat /tmp/foo.c
#include <stdlib.h>

typedef void *(*func_t) (void);

void *p;

void
__attribute__ ((noclone, noinline))
foo (int a)
{
  switch (a)
    {
    case 0:
    a0:
      return;
    case 1:
    a1:
      p =3D &&a1;
    case 2:
    a2:
      p =3D &&a2;
    case 3:
    a3:
      p =3D &&a3;
    case 4:
    a4:
      p =3D &&a4;
    case 5:
    a5:
      p =3D &&a5;
    case 6:
    a6:
      p =3D &&a6;
    case 7:
    a7:
      p =3D &&a7;
    case 8:
    a8:
      p =3D &&a8;
    case 9:
    a9:
      p =3D &&a9;
    case 10:
    a10:
      p =3D &&a10;
    default:
      p =3D &&a0;
    }
  goto *p;
}

int
main ()
{
  foo (20);
  if (p =3D=3D NULL)
    abort ();
  ((func_t) p) ();
  return 0;
}
[hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -S -O2  -fcf-protection /tmp/foo.c
[hjl@gnu-cfl-2 gcc]$ cat foo.s
        .file   "foo.c"
        .text
        .p2align 4
        .globl  foo
        .type   foo, @function
foo:
.LFB11:
        .cfi_startproc
        endbr64
        testl   %edi, %edi
        je      .L1
.L3:
        endbr64
.L4:
.L5:
.L6:
.L7:
.L8:
.L9:
.L10:
.L11:
.L12:
        movq    $.L2, p(%rip)
.L2:
.L1: <<<<<<<< Missing ENDBR
        ret
        .cfi_endproc
.LFE11:
        .size   foo, .-foo
        .section        .text.unlikely,"ax",@progbits
.LCOLDB0:
        .section        .text.startup,"ax",@progbits
.LHOTB0:
        .p2align 4
        .globl  main
        .type   main, @function
main:
.LFB12:
        .cfi_startproc
        endbr64
        subq    $8, %rsp
        .cfi_def_cfa_offset 16
        movl    $20, %edi
        call    foo
        movq    p(%rip), %rax
        testq   %rax, %rax
        je      .L19
        call    *%rax
        xorl    %eax, %eax
        addq    $8, %rsp
        .cfi_def_cfa_offset 8
        ret
        .cfi_endproc
        .section        .text.unlikely
        .cfi_startproc
        .type   main.cold, @function
main.cold:
.LFSB12:
.L19:
        .cfi_def_cfa_offset 16
        call    abort
        .cfi_endproc
.LFE12:
        .section        .text.startup
        .size   main, .-main
        .section        .text.unlikely
        .size   main.cold, .-main.cold
.LCOLDE0:
        .section        .text.startup
.LHOTE0:
        .globl  p
        .bss
        .align 8
        .type   p, @object
        .size   p, 8
p:
        .zero   8
        .ident  "GCC: (GNU) 10.0.1 20200422 (experimental)"
        .section        .note.GNU-stack,"",@progbits
        .section        .note.gnu.property,"a"
        .align 8
        .long    1f - 0f
        .long    4f - 1f
        .long    5
0:
        .string  "GNU"
1:
        .align 8
        .long    0xc0000002
        .long    3f - 2f
2:
        .long    0x3
3:
        .align 8
4:
[hjl@gnu-cfl-2 gcc]$=