https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80556
--- Comment #59 from Iain Sandoe <iains at gcc dot gnu.org> --- Author: iains Date: Mon Sep 25 08:47:41 2017 New Revision: 253137 URL: https://gcc.gnu.org/viewcvs?rev=253137&root=gcc&view=rev Log: [Patch, Darwin] Fix PR80556 by linking the system unwinder ahead of libgcc_eh. PR target/80556 * config/i386/darwin.h (REAL_LIB_SPEC): New; put libSystem ahead of libgcc_eh for m64. * config/i386/darwin64.h: Likewise. /* WORKAROUND pr80556: For x86_64 Darwin10 and later, the unwinder is in libunwind (redirected from libSystem). This doesn't use the keymgr (see keymgr.c) and therefore the calls that libgcc makes to obtain the KEYMGR_GCC3_DW2_OBJ_LIST are not updated to include new images, and might not even be valid for a single image. Therefore, for 64b exes at least, we must use the libunwind implementation, even when static-libgcc is specified. We put libSystem first so that unwinder symbols are satisfied from there. Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/darwin.h trunk/gcc/config/i386/darwin64.h
