gcc/testsuite/gcc.dg/tree-ssa/pr34146-2.c

   1 /* PR c/34146 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -fdump-tree-gimple" } */
   4
   5 struct A
   6 {
   7   int f1, f2, f3;
   8 };
   9
  10 struct B
  11 {
  12   struct A g1, g2;
  13 };
  14
  15 struct C
  16 {
  17   struct B h1, h2;
  18 };
  19
  20 typedef union
  21 {
  22   struct C c;
  23   char s[4];
  24   long int a;
  25 } T;
  26
  27 void
  28 foo (void)
  29 {
  30   T t = (T) { { { { 0, 0, 0 }, { 0, 0, 0 } }, { { 0, 0, 0 }, { 0, 0, 0 } } } };
  31   test (&t);
  32 }
  33
  34 void
  35 bar (void)
  36 {
  37   T t = (T) { { { { 0, 0, 0 }, (struct A) { 0, 0, 0 } },
  38               (struct B) { (struct A) { 0, 0, 0 }, { 0, 0, 0 } } } };
  39   test (&t);
  40 }
  41
  42 void
  43 baz (void)
  44 {
  45   T t = (T) { { { { 0, 0, 0 }, (struct A) { 1, 1, 1 } },
  46               (struct B) { (struct A) { 0, 0, 0 }, { 1, 1, 1 } } } };
  47   test (&t);
  48 }
  49
  50 /* { dg-final { scan-tree-dump-not "t = D" "gimple"} } */
  51 /* { dg-final { scan-tree-dump-not "t\.c\.h\[12\] = D" "gimple"} } */
  52 /* { dg-final { scan-tree-dump-not "\.g\[12\] = D" "gimple"} } */
  53 /* { dg-final { cleanup-tree-dump "gimple" } } */