From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-466866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 28758 invoked by alias); 15 Nov 2014 15:36:18 -0000
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-bugs.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
Received: (qmail 28739 invoked by uid 48); 15 Nov 2014 15:36:13 -0000
From: "fxcoudert at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/63891] New: [5.0 regression] Failure of darwin-weakimport-3.c
Date: Sat, 15 Nov 2014 15:36:00 -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: 5.0
X-Bugzilla-Keywords:
X-Bugzilla-Severity: normal
X-Bugzilla-Who: fxcoudert at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
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
Message-ID: <bug-63891-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-SW-Source: 2014-11/txt/msg01338.txt.bz2

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63891

            Bug ID: 63891
           Summary: [5.0 regression] Failure of darwin-weakimport-3.c
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fxcoudert at gcc dot gnu.org

Current trunk shows runtime failure for gcc.dg/darwin-weakimport-3.c on
x86_64-apple-darwin14 with -m32. The difference in the assembler between the
4.9.2 compiler (good) and the trunk compiler (bad, revision 217599) is:

$ diff -pu good-49.s bad-trunk.s 
--- good-49.s    2014-11-15 16:33:50.000000000 +0100
+++ bad-trunk.s    2014-11-15 16:33:30.000000000 +0100
@@ -3,6 +3,15 @@
 _foo:
     pushl    %ebp
     movl    %esp, %ebp
+    call    ___x86.get_pc_thunk.ax
+L1$pb:
+    nop
     popl    %ebp
     ret
+    .section __TEXT,__textcoal_nt,coalesced,pure_instructions
+    .weak_definition    ___x86.get_pc_thunk.ax
+    .private_extern    ___x86.get_pc_thunk.ax
+___x86.get_pc_thunk.ax:
+    movl    (%esp), %eax
+    ret
     .subsections_via_symbols


The presence of the line with "coalesced" makes the test fail.