Re: Always defined __SEH__ when build from trunk

[Алексей Павлов <alexpux at gmail dot com>]

Ok I try it now.

2012/11/22 Kai Tietz <ktietz70@googlemail.com>:
> 2012/11/22 niXman <i.nixman@gmail.com>:
>> 2012/11/22 Kai Tietz:
>>> Well, __SEH__ is defined for x64 in any case.  There is no way to have
>>> for x64 no SEH-support - at least not in a way it would work in a
>>> general way, as SEH is part of the ABI of x64.
>> I.e. SJLJ can't be used for 4.8(and later)-x86_64?
>>
>>> I am about to setup a build for testing this.
>> Thanks in advance.
>>
>>
>> --
>> Regards,
>> niXman
>
> So, I think I found the issue about SEH and SJLJ ... it is reasoned by
> the fact that __SEH__ is used in libgcc's unwinder, but it didn't
> checked if SJLJ should be used.
> The following patch should solve this issue.  Could you give it a try?
>
> Regards,
> Kai
>
> Index: unwind-c.c
> ===================================================================
> --- unwind-c.c  (Revision 193669)
> +++ unwind-c.c  (Arbeitskopie)
> @@ -109,7 +109,7 @@
>                       struct _Unwind_Exception * ue_header,
>                       struct _Unwind_Context * context)
>  #else
> -#ifdef __SEH__
> +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__)
>  static
>  #endif
>  _Unwind_Reason_Code
> @@ -233,7 +233,7 @@
>    return _URC_INSTALL_CONTEXT;
>  }
>
> -#ifdef __SEH__
> +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__)
>  EXCEPTION_DISPOSITION
>  __gcc_personality_seh0 (PEXCEPTION_RECORD ms_exc, void *this_frame,
>                         PCONTEXT ms_orig_context, PDISPATCHER_CONTEXT ms_disp)
> Index: unwind-generic.h
> ===================================================================
> --- unwind-generic.h    (Revision 193669)
> +++ unwind-generic.h    (Arbeitskopie)
> @@ -28,7 +28,7 @@
>  #ifndef _UNWIND_H
>  #define _UNWIND_H
>
> -#ifdef __SEH__
> +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__)
>  /* Only for _GCC_specific_handler.  */
>  #include <windows.h>
>  #endif
> @@ -275,7 +275,7 @@
>  # error "What type shall we use for _sleb128_t?"
>  #endif
>
> -#ifdef __SEH__
> +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__)
>  /* Handles the mapping from SEH to GCC interfaces.  */
>  EXCEPTION_DISPOSITION _GCC_specific_handler (PEXCEPTION_RECORD, void *,
>                                              PCONTEXT, PDISPATCHER_CONTEXT,
> Index: unwind-seh.c
> ===================================================================
> --- unwind-seh.c        (Revision 193669)
> +++ unwind-seh.c        (Arbeitskopie)
> @@ -28,7 +28,7 @@
>  #include "tm.h"
>  #include "unwind.h"
>
> -#ifdef __SEH__
> +#if defined (__SEH__) && !defined (__USING_SJLJ_EXCEPTIONS__)
>
>  /* At the moment everything is written for x64, but in theory this could
>     also be used for i386, arm, mips and other extant embedded Windows.  */
> @@ -480,4 +480,4 @@
>    return _URC_END_OF_STACK;
>  #endif
>  }
> -#endif /* __SEH__ */
> +#endif /* __SEH__  && !defined (__USING_SJLJ_EXCEPTIONS__)  */