From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id C8C193856DD5; Wed, 5 Jul 2023 13:31:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org C8C193856DD5 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1688563872; bh=T5xQgG5oyc9U7hDT1gHkq+SVSrz1kQqMbJMd6IwOOKI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=EdTQVM7dZyGoAGtutIDY+/xwtL/DfAHjRX0WGT0XhidGyiSiQgSk/yaOlEoBssUH6 YY4GYycawnaOLIZonWpdjpsBmhzsbJV4fpXs698ATaA9R6gZ2t/CnFi/+EvNut7Izh 30up6LdgDRoKUu3os4HEenvPbAWcVNk94jvxUv1s= From: "mikael at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug testsuite/110419] [14 regression] new test case gfortran.dg/value_9.f90 in r14-2050-gd130ae8499e0c6 fails Date: Wed, 05 Jul 2023 13:31:12 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: testsuite X-Bugzilla-Version: 14.0 X-Bugzilla-Keywords: testsuite-fail X-Bugzilla-Severity: normal X-Bugzilla-Who: mikael at gcc dot gnu.org 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: 14.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: 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: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110419 --- Comment #6 from Mikael Morin --- I finally got my access on gcc110=C2=A0working. (gdb) r Starting program: /home/mmorin/gcc-pr110360/pr110360/pr110419_comment4=20 Program received signal SIGSEGV, Segmentation fault. 0x10000684 in val (x=3D..., c=3D..., _x=3D268635256, _c=3D268635135) at pr110419_comment4.f90:6 6 subroutine val (x, c) (gdb) x/4cb &x 0x10000abc: 65 'A' 0 '\000' 0 '\000' 0 '\000' (gdb) x/4cb &c=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20= =20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20 0xfffef30c: 0 '\000' 0 '\000' 0 '\000' 8 '\b' (gdb) p _x $1 =3D 268635256 (gdb) p _c $2 =3D 268635135 (gdb) info registers r0 0x10000804 268437508 r1 0xfffef1a0 4294898080 r2 0xf7fe9e40 4160659008 r3 0x10000abc 268438204 r4 0x41 65 r5 0x1 1 r6 0x1 1 r7 0x0 0 r8 0xfd60354 265683796 r9 0x10000000 268435456 r10 0xfffef338 4294898488 r11 0xfffef338 4294898488 r12 0x24000842 603981890 r13 0x10028028 268599336 r14 0x0 0 r15 0x0 0 r16 0x0 0 r17 0x0 0 r18 0x0 0 r19 0x0 0 r20 0x0 0 r21 0x0 0 r22 0x0 0 r23 0x0 0 r24 0x0 0 r25 0x0 0 r26 0x0 0 r27 0xf7fdf970 4160616816 r28 0xf7fe0000 4160618496 r29 0x0 0 r30 0x41 65 r31 0xfffef1a0 4294898080 pc 0x10000684 0x10000684 msr 0xd032 53298 cr 0x24000842 603981890 lr 0x10000804 0x10000804 ctr 0xfc248a0 264390816 xer 0x0 0 fpscr 0x0 0 vscr 0x10000 65536 vrsave 0xffffffff -1 orig_r3 0x10000800 268437504 trap 0x300 768 (gdb) p &x $3 =3D (PTR TO -> ( character*1 )) 0x10000abc The debug info seems to be somewhat broken, but the arguments seem to be pa= ssed to r3, r4, r5, r6 registers and have the right value there. (gdb) disass Dump of assembler code for function val: 0x10000664 <+0>: stwu r1,-400(r1) 0x10000668 <+4>: mflr r0 0x1000066c <+8>: stw r0,404(r1) 0x10000670 <+12>: stw r30,392(r1) 0x10000674 <+16>: stw r31,396(r1) 0x10000678 <+20>: mr r31,r1 0x1000067c <+24>: stw r3,360(r31) 0x10000680 <+28>: mr r30,r4 =3D> 0x10000684 <+32>: lbz r9,0(r30) 0x10000688 <+36>: stb r9,364(r31) 0x1000068c <+40>: stw r5,368(r31) 0x10000690 <+44>: stw r6,372(r31) 0x10000694 <+48>: stw r11,376(r31) 0x10000698 <+52>: lis r9,4096 0x1000069c <+56>: addi r9,r9,2676 Not sure I read assembly correctly, but looks like we are trying to load the second argument (available in r4) by reference instead of by value. I don't know what to look at next.=