On 09/15/2014 11:21 AM, Ulrich Weigand wrote:
Jakub Jelinek wrote:
On Tue, Jun 10, 2014 at 07:37:50PM +0200, Ulrich Weigand wrote:
the following C++ test case:
struct pollfd
{
int fd;
short int events;
short int revents;
};
struct Pollfd : public pollfd { };
struct Pollfd myfd[10];
int test (void)
{
return __builtin_object_size ((struct pollfd *)myfd, 1);
}
ends up returning 8 from the "test" routine, not 80.
This example strikes me as strange. Why do you expect the size of a
pointer to the base class subobject to give a meaningful answer, any
more than taking the address of a data member?
Jason
