From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
 id E0E18388F05D; Tue, 16 Jun 2020 15:18:24 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E0E18388F05D
From: "mgaudet at mozilla dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/26122] New: gdb fails to demangle a name
Date: Tue, 16 Jun 2020 15:18:24 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: c++
X-Bugzilla-Version: 9.2
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: mgaudet at mozilla dot com
X-Bugzilla-Status: UNCONFIRMED
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: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-26122-4717@http.sourceware.org/bugzilla/>
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 <gdb-prs.sourceware.org>
List-Unsubscribe: <http://sourceware.org/mailman/options/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb-prs/>
List-Help: <mailto:gdb-prs-request@sourceware.org?subject=help>
List-Subscribe: <http://sourceware.org/mailman/listinfo/gdb-prs>,
 <mailto:gdb-prs-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Tue, 16 Jun 2020 15:18:25 -0000

https://sourceware.org/bugzilla/show_bug.cgi?id=3D26122

            Bug ID: 26122
           Summary: gdb fails to demangle a name
           Product: gdb
           Version: 9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: mgaudet at mozilla dot com
  Target Milestone: ---

Using a locally compiled GDB 9.2, I'm trying to use `skip -rfunction`,
however,according to `set debug skip on`, the regexp is being applied to the
mangled name, not the demangled name:=20

```
(gdb) step=20
skip: checking if function
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3=
stdE16is_convertible_vIS5_S1_EEiE4typeE
matches regex .*JS::Handle.*...no.
skip: checking if function
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3=
stdE16is_convertible_vIS5_S1_EEiE4typeE
matches regex .*JS::Handle.*...no.
```

This appears to be because the name cannot be demangled by GDB:=20

```
(gdb) demangle
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3=
stdE16is_convertible_vIS5_S1_EEiE4typeE=20
Can't demangle
"_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr=
3stdE16is_convertible_vIS5_S1_EEiE4typeE"
```

Gimli-rs cpp_demangle [1] appears to demangle it correctly:=20


```
$ /home/matthew/.cargo/bin/cppfilt=20
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3=
stdE16is_convertible_vIS5_S1_EEiE4typeE=20
JS::Handle<JS::PropertyKey>::Handle<JS::PropertyKey>(std::enable_if<std::is=
_convertible_v<JS::PropertyKey,
JS::PropertyKey>, int>::type)=20
```

[1]: https://github.com/gimli-rs/cpp_demangle

--=20
You are receiving this mail because:
You are on the CC list for the bug.=