So my diff that switched libunwind to use dl_unwind_find_exidx() was
incomplete. I forgot that I had put its prototype in <dlfcn.h> and
missed that file when generating the diff. However, <dlfcn.h> isn't
really the right place to put the prototype. We have
dl_iterate_phdr() in <link_elf.h>, and dl_unwind_find_exidx() is
closely realted to that function. In addition to that FreeBSD has it
there as well. Well actually, they have <sys/link_elf.h>.. So that's
why I include <link.h> to get the prototype, which include
<link_elf.h> on OpenBSD and NetBSD and <sys/link_elf.h> on FreeBSD.
ok?
Index: include/link_elf.h
===================================================================
RCS file: /cvs/src/include/link_elf.h,v
retrieving revision 1.6
diff -u -p -r1.6 link_elf.h
--- include/link_elf.h 6 Feb 2006 16:51:50 -0000 1.6
+++ include/link_elf.h 20 Sep 2016 17:59:37 -0000
@@ -36,6 +36,7 @@ struct dl_phdr_info {
__BEGIN_DECLS
int dl_iterate_phdr (int (*)(struct dl_phdr_info *, size_t, void *),
void *);
+void *dl_unwind_find_exidx(const void *, int *);
__END_DECLS
#endif /* !_LINK_ELF_H */
Index: lib/libunwind/src/AddressSpace.hpp
===================================================================
RCS file: /cvs/src/lib/libunwind/src/AddressSpace.hpp,v
retrieving revision 1.4
diff -u -p -r1.4 AddressSpace.hpp
--- lib/libunwind/src/AddressSpace.hpp 18 Sep 2016 11:18:28 -0000 1.4
+++ lib/libunwind/src/AddressSpace.hpp 20 Sep 2016 17:59:37 -0000
@@ -37,6 +37,7 @@ namespace libunwind {
#if _LIBUNWIND_ARM_EHABI
#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <link.h>
typedef void *_Unwind_Ptr;
#elif defined(__linux__)
