On Fri, Aug 25, 2017 at 05:38:51PM +0200, Tijl Coosemans wrote:
> So both GCC and LLVM unwinding look up the return address in the CFI
> table and fail when the return address is garbage, but LLVM treats this
> as an end-of-stack condition while GCC further tries to see if the
> return address poin
Tijl Coosemans tijl at FreeBSD.org wrote on
Fri Aug 25 15:40:10 UTC 2017 :
> So both GCC and LLVM unwinding look up the return address in the CFI
> table and fail when the return address is garbage, but LLVM treats this
> as an end-of-stack condition while GCC further tries to see if the
> return
On Thu, 24 Aug 2017 18:08:30 +0200 Tijl Coosemans wrote:
> On Thu, 24 Aug 2017 18:42:35 +0300 Konstantin Belousov
> wrote:
>> On Wed, Aug 23, 2017 at 04:37:07PM +0200, Tijl Coosemans wrote:
>>> The following program segfaults for me on amd64 when linked like this:
>>>
>>> cc -o test test.c -l
On Fri, Aug 25, 2017 at 6:53 AM, Ed Schouten wrote:
> 2017-08-25 9:46 GMT+02:00 Mark Millard :
> > It appears that at least 11.1-STABLE -r322807 does not handle
> > -std=c++98 styles of use of _Static_assert for g++7 in that
> > g++7 reports an error:
>
> Maybe we need to do something like this?
2017-08-25 9:46 GMT+02:00 Mark Millard :
> It appears that at least 11.1-STABLE -r322807 does not handle
> -std=c++98 styles of use of _Static_assert for g++7 in that
> g++7 reports an error:
Maybe we need to do something like this?
Index: sys/sys/cdefs.h
=
On 2017-Aug-25, at 12:14 AM, David Chisnall wrote:
> On 25 Aug 2017, at 07:32, Mark Millard wrote:
>>
>> As I remember _Static_assert is from C11, not
>> the older C99.
>
> In pre-C11 dialects of C, _Static_assert is an identifier reserved for the
> implementation. sys/cdefs.h defines it to
2017-08-25 8:32 GMT+02:00 Mark Millard :
>> # g++49 main.cc
>> main.cc:2:15: error: expected constructor, destructor, or type conversion
>> before '(' token
>> _Static_assert(1,"Test");
Yeah, that's because GCC is such a pain in the neck compiler that it
doesn't want to expose these C11 keywords
On 25 Aug 2017, at 07:32, Mark Millard wrote:
>
> As I remember _Static_assert is from C11, not
> the older C99.
In pre-C11 dialects of C, _Static_assert is an identifier reserved for the
implementation. sys/cdefs.h defines it to generate a zero-length array if the
condition is true or a nega
