GDB segfaults when debugging anything using kj-async or CAPNP_DEBUG_TYPES

[arichardson]

The symbol kj::Quantity<decltype(((long)(1)) * ((long)(1))), kj::::NanosecondLabel> kj::operator*<long, long, kj::::NanosecondLabel>(long, kj::Quantity<long, kj::_::NanosecondLabel>) causes GDB (and c++filt) to crash while demangling it: https://sourceware.org/bugzilla/show_bug.cgi?id=18133. While this is an upstream bug in binutils, it makes it impossible to debug my application. It would be really nice if a workaround could be found.

[kentonv]

Yeah, I run into this all the time and it's really annoying. There is a work-around, though:

1. Start gdb without telling it an executable.
2. Disable demangling: set demangle-style none
3. Now load the executable: file path/to/executable
4. Proceed as normal... demangling names in your head. :(

[kentonv]

Also here is a previous bug report for the same problem:

https://sourceware.org/bugzilla/show_bug.cgi?id=17066

[arichardson]

Thanks, didn't think about disabling demangling.

[kentonv]

(Thanks to @mortehu for introducing me to the work-around.)

[kentonv]

I believe this has long been fixed in gdb.