[Bug c++/26122] New: gdb fails to demangle a name

["mgaudet at mozilla dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=26122

            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: 

```
(gdb) step 
skip: checking if function
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3stdE16is_convertible_vIS5_S1_EEiE4typeE
matches regex .*JS::Handle.*...no.
skip: checking if function
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3stdE16is_convertible_vIS5_S1_EEiE4typeE
matches regex .*JS::Handle.*...no.
```

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

```
(gdb) demangle
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3stdE16is_convertible_vIS5_S1_EEiE4typeE 
Can't demangle
"_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3stdE16is_convertible_vIS5_S1_EEiE4typeE"
```

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


```
$ /home/matthew/.cargo/bin/cppfilt 
_ZN2JS6HandleINS_11PropertyKeyEEC2IS1_EERKNS_6RootedIT_EENSt9enable_ifIXsr3stdE16is_convertible_vIS5_S1_EEiE4typeE 
JS::Handle<JS::PropertyKey>::Handle<JS::PropertyKey>(std::enable_if<std::is_convertible_v<JS::PropertyKey,
JS::PropertyKey>, int>::type) 
```

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

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