Re: AW: [PATCH] eh_personality.cc: unwinding on ARM

2012-03-19 Thread Peter Waechtler
On 19.03.2012 18:32, Paul Brook wrote: while I have your attention: what is an virtual unwind frame? ;) No such thing exists. Throwing an exception is a muti-stage process. It requires unwinding the stack frame twice, taking different actions in the process. "Forced" unwinding and backtracing

Re: AW: [PATCH] eh_personality.cc: unwinding on ARM

2012-03-19 Thread Paul Brook
> while I have your attention: what is an virtual unwind frame? ;) No such thing exists. Throwing an exception is a muti-stage process. It requires unwinding the stack frame twice, taking different actions in the process. "Forced" unwinding and backtracing add extra complications. The _US_*