Demangling in backtraces

[Jeffrey Walton]

On Sun, Mar 14, 2021 at 3:48 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Mär 06 2021, Eli Zaretskii via Gdb wrote:
>
> > I have built a C program linked against libgccjit.  When it crashes,
> > the backtrace shows mangled names, like this:
> >
> >  #0  0x70f5ac3e in libgccjit-0!_Z17gimple_build_callP9tree_nodejz ()
>
> Is this prefix part of the symbol name?  A valid mangled name must start
> with _Z.

It looks like the prefix 'libgccjit-0!' is causing trouble:

$ echo '_Z17gimple_build_callP9tree_nodejz' | c++filt
gimple_build_call(tree_node*, unsigned int, ...)

$ echo 'libgccjit-0!_Z17gimple_build_callP9tree_nodejz'
libgccjit-0!_Z17gimple_build_callP9tree_nodejz

Jeff