Re: PATCH [8/n]: Prepare x32: PR other/48007: Unwind library doesn't work with UNITS_PER_WORD > sizeof (void *)

["H.J. Lu" <hjl.tools@gmail.com>]

On Fri, Jul 1, 2011 at 6:37 AM, Rainer Orth <ro@cebitec.uni-bielefeld.de> wrote:
> "H.J. Lu" <hjl.tools@gmail.com> writes:
>
>> On Fri, Jul 1, 2011 at 2:02 AM, Rainer Orth <ro@cebitec.uni-bielefeld.de> wrote:
>>> "H.J. Lu" <hjl.tools@gmail.com> writes:
>>>
>>>> Here is the updated patch.  It works on simple tests.
>>>> I am running full tests.  I kept config/i386/value-unwind.h
>>>> since libgcc/md-unwind-support.h is included too late
>>>> in unwind-dw2.c and I don't want to move it to be on
>>>> the safe side.
>>>
>>> Oh please, don't pile hack upon hack to avoid proper testing.
>>>
>>
>> What is your suggestion?
>
> How about moving the md-unwind-support.h include up to the rest of the
> includes?  The headers usually only define MD_FALLBACK_FRAME_STATE_FOR
> and perhaps MD_FROB_UPDATE_CONTEXT, everything else is an internal
> helper macro, so order shouldn't matter.
>

It doesn't work on Linux/x86-64:

In file included from
/export/gnu/import/git/gcc/libgcc/../gcc/unwind-dw2.c:39:0:
./md-unwind-support.h: In function \u2018x86_fallback_frame_state\u2019:
./md-unwind-support.h:121:30: error: dereferencing pointer to incomplete type
./md-unwind-support.h:129:17: error: dereferencing pointer to incomplete type
./md-unwind-support.h:141:23: error: dereferencing pointer to incomplete type
./md-unwind-support.h:153:49: error: dereferencing pointer to incomplete type
./md-unwind-support.h: In function \u2018x86_frob_update_context\u2019:
./md-unwind-support.h:185:30: error: dereferencing pointer to incomplete type
./md-unwind-support.h:192:5: warning: implicit declaration of function
\u2018_Unwind_SetSignalFrame\u2019 [-Wimplicit-function-declaration]
/export/gnu/import/git/gcc/libgcc/../gcc/unwind-dw2.c: At top level:
/export/gnu/import/git/gcc/libgcc/../gcc/unwind-dw2.c:140:1: warning:
conflicting types for \u2018_Unwind_SetSignalFrame\u2019 [enabled by
default]
/export/gnu/import/git/gcc/libgcc/../gcc/unwind-dw2.c:140:1: error:
static declaration of \u2018_Unwind_SetSignalFrame\u2019 follows
non-static declaration
./md-unwind-support.h:192:5: note: previous implicit declaration of
\u2018_Unwind_SetSignalFrame\u2019 was here


-- 
H.J.