From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2CF043858C2C; Thu, 9 Sep 2021 14:33:01 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2CF043858C2C From: "vries at gcc dot gnu.org" To: gdb-prs@sourceware.org Subject: [Bug ada/28323] segfault in ada_is_unconstrained_packed_array_type Date: Thu, 09 Sep 2021 14:33:01 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gdb X-Bugzilla-Component: ada X-Bugzilla-Version: HEAD X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: vries at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- 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://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gdb-prs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-prs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Sep 2021 14:33:01 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D28323 --- Comment #1 from Tom de Vries --- Reproduce: ... $ cat gdb.in interpreter-exec mi "100-gdb-set height 0" interpreter-exec mi "101-gdb-set width 0" show mi-async interpreter-exec mi "104-environment-directory -r" interpreter-exec mi "105-environment-directory /home/vries/gdb_versions/devel/src/gdb/testsuite/gdb.ada" interpreter-exec mi "105-file-exec-and-symbols /home/vries/gdb_versions/devel/foo" interpreter-exec mi "200-break-insert --qualified -t main" interpreter-exec mi "220-exec-run" interpreter-exec mi "-break-insert -t foo.adb:22" interpreter-exec mi "-exec-continue" interpreter-exec mi "-var-create bt * bt" interpreter-exec mi "-var-update 1 *" $ gdb.sh -q -batch -x gdb.in ... [ note: with foo copied out of build tree, not relevant to reproducing thou= gh ] Problem is here: ... Thread 1 "gdb" received signal SIGSEGV, Segmentation fault. 0x0000000000450861 in ada_is_unconstrained_packed_array_type (type=3D0x2516= 3f0) at /home/vries/gdb_versions/devel/src/gdb/ada-lang.c:1978 1978 return TYPE_FIELD_BITSIZE (type, 0) > 0; (gdb) p *type $2 =3D {pointer_type =3D 0x2ae4e20, reference_type =3D 0x0, rvalue_referenc= e_type =3D 0x0,=20 chain =3D 0x25163f0, align_log2 =3D 0, m_instance_flags =3D 0, length =3D= 0, main_type =3D 0x2ae4900} (gdb) p type.main_type->flds_bnds.fields $4 =3D (field *) 0x0 ... Type in more detail: ... (gdb) p *type.main_type $3 =3D {code =3D TYPE_CODE_TYPEDEF, m_flag_unsigned =3D 0, m_flag_nosign = =3D 0, m_flag_stub =3D 0,=20 m_flag_target_stub =3D 1, m_flag_prototyped =3D 0, m_flag_varargs =3D 0, m_flag_vector =3D 0,=20 m_flag_stub_supported =3D 0, m_flag_gnu_ifunc =3D 0, m_flag_fixed_instanc= e =3D 0,=20 m_flag_objfile_owned =3D 1, m_flag_endianity_not_default =3D 0, m_flag_declared_class =3D 0,=20 m_flag_flag_enum =3D 0, type_specific_field =3D TYPE_SPECIFIC_GNAT_STUFF,= nfields =3D 0,=20 name =3D 0x7fffec9733a2 "pck__bounded___XUA", m_owner =3D {objfile =3D 0x= 1b4e6f0, gdbarch =3D=20 0x1b4e6f0}, target_type =3D 0x2ae4b80, flds_bnds =3D {fields =3D 0x0, b= ounds =3D 0x0,=20 complex_type =3D 0x0}, type_specific =3D {cplus_stuff =3D 0xf2e9c8 ,=20 gnat_stuff =3D 0xf2e9c8 , floatformat =3D 0xf2e9c8 ,=20 func_stuff =3D 0xf2e9c8 , self_type =3D 0xf2e9c8 ,=20 fixed_point_info =3D 0xf2e9c8 , int_stuff =3D {bit_si= ze =3D 59848,=20 bit_offset =3D 242}}, dyn_prop_list =3D 0x0} ... --=20 You are receiving this mail because: You are on the CC list for the bug.=