* bootstrap fails using default c++ mode in stage 2 and 3 for native x86_64-w64-mingw32
@ 2012-07-19 15:48 Rainer Emrich
2012-07-19 17:47 ` Ian Lance Taylor
0 siblings, 1 reply; 2+ messages in thread
From: Rainer Emrich @ 2012-07-19 15:48 UTC (permalink / raw)
To: gcc
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Affected versions are 4.7.x and 4.8.0.
PR 53912 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53912 shows the failures
in stage 2 for gcc-4.8.0. Most are of the form "error: cast from 'void*' to
'long int' loses precision" or similar.
AFAIK a switch to c++ mode is planned for stage 1 as well. So we are in
trouble for native x86_64-w64-mingw32 builds. Any suggestions?
Rainer
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: bootstrap fails using default c++ mode in stage 2 and 3 for native x86_64-w64-mingw32
2012-07-19 15:48 bootstrap fails using default c++ mode in stage 2 and 3 for native x86_64-w64-mingw32 Rainer Emrich
@ 2012-07-19 17:47 ` Ian Lance Taylor
0 siblings, 0 replies; 2+ messages in thread
From: Ian Lance Taylor @ 2012-07-19 17:47 UTC (permalink / raw)
To: Rainer Emrich; +Cc: gcc
On Thu, Jul 19, 2012 at 8:48 AM, Rainer Emrich
<rainer@emrich-ebersheim.de> wrote:
>
> PR 53912 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53912 shows the failures
> in stage 2 for gcc-4.8.0. Most are of the form "error: cast from 'void*' to
> 'long int' loses precision" or similar.
>
> AFAIK a switch to c++ mode is planned for stage 1 as well. So we are in
> trouble for native x86_64-w64-mingw32 builds. Any suggestions?
I recommend fixing the code. In ggc-common.c change
#define POINTER_HASH(x) (hashval_t)((long)x >> 3)
to
#define POINTER_HASH(x) ((hashval-t)((uintptr_t) x >> 3))
Ian
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2012-07-19 15:48 bootstrap fails using default c++ mode in stage 2 and 3 for native x86_64-w64-mingw32 Rainer Emrich
2012-07-19 17:47 ` Ian Lance Taylor
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