[Bug tree-optimization/48165] New: gcc-4.6: internal compiler error: in build2_stat

["holger.hopp at sap dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48165

           Summary: gcc-4.6: internal compiler error: in build2_stat
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: holger.hopp@sap.com


gcc-4.6 and trunk (rev. 171047) throw an internal compiler error.

$ g++ -O2 -c t.cpp
t.cpp: In function âvoid bar(void*)â:
t.cpp:31:6: internal compiler error: in build2_stat, at tree.c:3799
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

-O0 runs fine,
platform: linux, x86_64, but probably platform-independent


source t.cpp:

typedef long unsigned int size_t;

extern "C" {

extern __inline __attribute__ ((__always_inline__)) __attribute__
((__gnu_inline__, __artificial__)) void *
memcpy (void *__restrict __dest, __const void *__restrict __src, size_t __len)
throw ()
{
  return __builtin___memcpy_chk (__dest, __src, __len, __builtin_object_size
(__dest, 0));
}
}

typedef char TCODE[20];
typedef TCODE TCODE_ARRAY[5];
typedef struct PARAM
{
  TCODE_ARRAY tcode;
} PARAM;

static void foo (void* p)
{
  char buffer[4+sizeof(PARAM)];
  PARAM *param = (PARAM *)(buffer + 4);
  int i;

  for (i=0; i < 5; i++)
    {
      memcpy( param->tcode[i], p, 20 );
    }
}

void bar (void* p)
{
  foo (p);
}