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On Wed, Mar 6, 2013 at 11:46 AM, N.M. Maclaren wrote:
> On Mar 6 2013, Andrew Pinski wrote:
>>
>>
>> Except GCC implements C's unions as allowing to do type punning as an
>> extension and as far as GCC is concerned that is not going to change
>> any time soon.
>> This is a documented exception to
On Wed, 6 Mar 2013, N.M. Maclaren wrote:
> On Mar 6 2013, Andrew Pinski wrote:
> >
> > Except GCC implements C's unions as allowing to do type punning as an
> > extension and as far as GCC is concerned that is not going to change
> > any time soon.
> > This is a documented exception to the aliasi
On Mar 6 2013, Andrew Pinski wrote:
Except GCC implements C's unions as allowing to do type punning as an
extension and as far as GCC is concerned that is not going to change
any time soon.
This is a documented exception to the aliasing/type punning rules.
The problem is that this is worse tha
Doing a bit more light reading on type-punning wrt unions I came upon
the following (from
http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/Structures-unions-enumerations-and-bit_002dfields-implementation.html#Structures-unions-enumerations-and-bit_002dfields-implementation):
"""
- A member of a union o
On Mar 6 2013, Russell Brennan wrote:
Perhaps I misunderstand how you are defining failure here... what
would be the failure mode? Perhaps if you could provide an example of
the ill-effects that could be seen as a result of this behavior it
would clarify the issue?
Generating bad code. In:
On Wed, Mar 6, 2013 at 10:35 AM, Thomas Koenig wrote:
> Am 04.03.2013 21:34, schrieb N.M. Maclaren:
>
> (quoting documentation about DEC UNIONs for Fortran)
>
>> "However, if you overlay one variable with another smaller variable,
>> that portion of the initial variable is retained that is not ove
Perhaps I misunderstand how you are defining failure here... what
would be the failure mode? Perhaps if you could provide an example of
the ill-effects that could be seen as a result of this behavior it
would clarify the issue?
v/r,
Russell
On Wed, Mar 6, 2013 at 2:15 PM, N.M. Maclaren wrote:
On Mar 6 2013, Russell Brennan wrote:
Ouch.
This seems to be at odds with C's unions, where it is not allowed to do
type punning.
As of gcc 4.4.6, the description above seems to match the C behavior:
Er, no. One simple test does not prove that it will always work; this
sort of thing is mos
>> "However, if you overlay one variable with another smaller variable,
>> that portion of the initial variable is retained that is not overlaid.
>> Depending on the application, the retained portion of an overlaid variable
>> may or may not contain meaningful data and can be utilized at a later
>>
Am 04.03.2013 21:34, schrieb N.M. Maclaren:
(quoting documentation about DEC UNIONs for Fortran)
"However, if you overlay one variable with another smaller variable,
that portion of the initial variable is retained that is not overlaid.
Depending on the application, the retained portion of an o
Error exit code 1
Stop.
"
it seems, the problem with system's ld, but the ld of binutils don't
support hppa2.0w-hp-hpux11.11 .
could you pls help me on that. I'm very appreciated to you.
--
Thanks and Best Regards,
Ma GuoLiang (马国良)
Tel: (86-10)82782244-2392
http://www.p
... the recent fix in mainline of gcc/stor-layout.c... could someone
pls import that into the gomp branch too?
--
Cheers,
/ChJ
On Apr 7, 2005, at 12:36 PM, Virender Kashyap wrote:
On Thu, 7 Apr 2005, Dale Johannesen wrote:
The command line you show is the built compiler trying to build
gcc's library.
It doesn't work, which means there is a bug in your changes.
actually it was working fine before even with changes.
but n
On Thu, 7 Apr 2005, Dale Johannesen wrote:
The command line you show is the built compiler trying to build gcc's
library.
It doesn't work, which means there is a bug in your changes.
actually it was working fine before even with changes. but how do i
locate where is the problem . this does not
On Apr 7, 2005, at 11:58 AM, Virender Kashyap wrote:
hi
i made some changes in gcc code. when i try to comile it using
make , i get the following error ( last few lines from output ). Pls
help me in removing this error.
The command line you show is the built compiler trying to build gcc&#
hi
i made some changes in gcc code. when i try to comile it using make ,
i get the following error ( last few lines from output ). Pls help me in
removing this error.
-f libgcc.mk all
make[2]: Entering directory `/home/virenk/obj_gcc/gcc'
/home/virenk/obj_gcc/gcc/xgcc -B/home/v
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