Hi, this patch fixes Obj-C's exception handling code for SEH x64. For it the guard for forcing SjLj was missing and therefore leads to issues, if OP wants to force SjLj.
ChangeLog 2013-07-03 Kai Tietz <kti...@redhat.com> * exception.c: Add check for SjLj to SEH blocks. Tested for x86_64-w64-mingw32, and i686-pc-cygwin. I will apply patch tomorrow, if there are no objections. Regards, Kai Index: exception.c =================================================================== --- exception.c (Revision 200643) +++ exception.c (Arbeitskopie) @@ -202,7 +202,7 @@ get_ttype_entry (struct lsda_header_info *info, _U #ifdef SJLJ_EXCEPTIONS #define PERSONALITY_FUNCTION __gnu_objc_personality_sj0 #define __builtin_eh_return_data_regno(x) x -#elif defined(__SEH__) +#elif defined(__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__) #define PERSONALITY_FUNCTION __gnu_objc_personality_imp #else #define PERSONALITY_FUNCTION __gnu_objc_personality_v0 @@ -227,7 +227,7 @@ PERSONALITY_FUNCTION (_Unwind_State state, #define CONTINUE_UNWINDING return _URC_CONTINUE_UNWIND -#ifdef __SEH__ +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__) static #endif _Unwind_Reason_Code @@ -524,7 +524,7 @@ objc_exception_throw (id exception) abort (); } -#ifdef __SEH__ +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__) EXCEPTION_DISPOSITION __gnu_objc_personality_seh0 (PEXCEPTION_RECORD ms_exc, void *this_frame, PCONTEXT ms_orig_context, @@ -533,4 +533,4 @@ __gnu_objc_personality_seh0 (PEXCEPTION_RECORD ms_ return _GCC_specific_handler (ms_exc, this_frame, ms_orig_context, ms_disp, __gnu_objc_personality_imp); } -#endif /* SEH */ +#endif