[Bug optimization/11635] [3.3/3.4 regression] Unnecessary store onto stack

[pinskia at physics dot uc dot edu]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11635



------- Additional Comments From pinskia at physics dot uc dot edu  2003-07-22 
22:59 -------
I forgot to attach the reduced sources:
typedef unsigned int __uint32_t;
typedef unsigned int __socklen_t;
typedef __socklen_t socklen_t;

typedef unsigned short int sa_family_t;

struct sockaddr
  {
    sa_family_t sa_family;
    char sa_data[14];
  };
struct sockaddr_storage
  {
    sa_family_t ss_family;
    __uint32_t __ss_align;
    char __ss_padding[(128 - (2 * sizeof (__uint32_t)))];
  };

typedef union { struct sockaddr *__restrict __sockaddr__; struct sockaddr_at 
*__restrict 
__sockaddr_a
t__; struct sockaddr_ax25 *__restrict __sockaddr_ax25__; struct sockaddr_dl 
*__restrict 
__sockaddr_dl
__; struct sockaddr_eon *__restrict __sockaddr_eon__; struct sockaddr_in 
*__restrict 
__sockaddr_in__;
 struct sockaddr_in6 *__restrict __sockaddr_in6__; struct sockaddr_inarp 
*__restrict 
__sockaddr_inarp
__; struct sockaddr_ipx *__restrict __sockaddr_ipx__; struct sockaddr_iso 
*__restrict 
__sockaddr_iso_
_; struct sockaddr_ns *__restrict __sockaddr_ns__; struct sockaddr_un 
*__restrict __sockaddr_un__; 
st
ruct sockaddr_x25 *__restrict __sockaddr_x25__;
       } __SOCKADDR_ARG __attribute__ ((__transparent_union__));
extern int getpeername (int __fd, __SOCKADDR_ARG __addr,
   socklen_t *__restrict __len) ;


int
main(void)
{
 struct sockaddr_storage from;
 struct sockaddr *const fromp = (void *)&from;
 socklen_t fromlen;

 fromlen = sizeof(from);

 if (getpeername(0, fromp, &fromlen) < 0) {
  return 1;
 }

 return 0;
}



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