https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81081
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Denis Khalikov from comment #3)
> This fix
> 111 AddressInfo *info = cdata->get_new_frame(addr);
> 112 if (filename)
> 113 info->file = internal_strdup(filename);
> 114 info->line = lineno;
> 115 if (function) {
> 116 info->function = DemangleAlloc(function, /*always_alloc*/ true);
> 117 cdata->frames_symbolized++;
> 118 }
> 119 return 0;
> 120 }
I think you should just return 0; early if function == NULL and
cdata->frames_symbolized > 0, trying to augment that case with
backtrace_syminfo doesn't look right.
