Sure, it is. But the point is that system's unwind.h header is used over the local one. So if you have an older gcc to build, you might get the wrong unwind.h header. I admit that this patch is a kludge but fixes issue I have with bootstrap cross on cygwin by using a gcc 3.4.4 compiler.
2013/1/18 Jakub Jelinek <ja...@redhat.com>: > On Fri, Jan 18, 2013 at 11:05:11AM +0100, Kai Tietz wrote: >> this patch cleans up a undeclared-symbol issue in libbacktrace. > > It is prototyped in unwind.h, at least should be. > >> 2013-01-18 Kai Tietz <kti...@redhat.com> >> >> * backtrace.c (_Unwind_GetIPInfo): Add prototype. >> * simple.c (_Unwind_GetIPInfo): Likewise. >> >> Tested for x86_64-w64-mingw32, and i686-w64-mingw32. Ok for apply? > > Jakub
