From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31263 invoked by alias); 9 Apr 2015 15:18:03 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 31166 invoked by uid 48); 9 Apr 2015 15:17:59 -0000 From: "juan-antonio.garcia@nabla-designs.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/65716] New: Integral promotion wrong with arm version Date: Thu, 09 Apr 2015 15:18:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 4.6.3 X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: juan-antonio.garcia@nabla-designs.com 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 attachments.created Message-ID: 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-SW-Source: 2015-04/txt/msg00706.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D65716 Bug ID: 65716 Summary: Integral promotion wrong with arm version Product: gcc Version: 4.6.3 Status: UNCONFIRMED Severity: major Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: juan-antonio.garcia@nabla-designs.com Created attachment 35277 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D35277&action=3Dedit Compiler output to gcc -v -save-temps test.c: int main() { char a =3D-1; int b =3D a; while(b>0); return 0; } This program has different behaviour in i386 and arm architectures. i386 : The program exits normally. arm : The program loops for ever because evaluates b > 0. ****************************************************************** test.i: # 1 "test.c" # 1 "" # 1 "" # 1 "test.c" int main() { char a =3D-1; int b =3D a; while(b>0); return 0; } ******************************************************************** test.s: .syntax unified .arch armv7-a .eabi_attribute 27, 3 .fpu vfpv3-d16 .eabi_attribute 20, 1 .eabi_attribute 21, 1 .eabi_attribute 23, 3 .eabi_attribute 24, 1 .eabi_attribute 25, 1 .eabi_attribute 26, 2 .eabi_attribute 30, 6 .eabi_attribute 34, 1 .eabi_attribute 18, 4 .thumb .file "test.c" .text .align 2 .global main .thumb .thumb_func .type main, %function main: @ args =3D 0, pretend =3D 0, frame =3D 8 @ frame_needed =3D 1, uses_anonymous_args =3D 0 @ link register save eliminated. push {r7} sub sp, sp, #12 add r7, sp, #0 mov r3, #255 strb r3, [r7, #7] ldrb r3, [r7, #7] @ zero_extendqisi2 str r3, [r7, #0] .L2: ldr r3, [r7, #0] cmp r3, #0 bgt .L2 mov r3, #0 mov r0, r3 add r7, r7, #12 mov sp, r7 pop {r7} bx lr .size main, .-main .ident "GCC: (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3" .section .note.GNU-stack,"",%progbits >>From gcc-bugs-return-483156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Apr 09 15:19:14 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 34271 invoked by alias); 9 Apr 2015 15:19:14 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 34224 invoked by uid 48); 9 Apr 2015 15:19:11 -0000 From: "ro at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug go/65717] 64-bit runtime FAILs with 32-bit compiler Date: Thu, 09 Apr 2015 15:19:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: go X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: ro at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: ian at airs dot com X-Bugzilla-Target-Milestone: 5.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: target_milestone Message-ID: In-Reply-To: References: 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: 2015-04/txt/msg00708.txt.bz2 Content-length: 284 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65717 Rainer Orth changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |5.0