gcc/testsuite/gcc.dg/pr94574.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -w -Wno-psabi" } */
   3
   4 typedef unsigned int v4si __attribute__((vector_size(16)));
   5 typedef unsigned int v2si __attribute__((vector_size(8)));
   6
   7 /* The aliasing is somewhat dubious here, but it must compile.  */
   8
   9 v2si
  10 foo (v4si v)
  11 {
  12   v2si res;
  13   *(v4si *) &res = v;
  14   return res;
  15 }