https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64645
--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> --- OK. AFAIK Cygwin-32 does not support the unwind info at all, right?. Cygwin-64 does support Windows-SEH style unwind info. libjava uses a kind of hack to get the stack trace: see libjava/sysdep/i386/backtrace.h I've seen java exceptions with call stack using above patch.
