gcc/testsuite/gcc.dg/pr41837.c

   1 /* PR middle-end/41837 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -fwhole-program -fprofile-generate" } */
   4
   5 typedef struct { int a, b; } T1;
   6 typedef struct S1 *T2;
   7 typedef struct S2 *T3;
   8 typedef struct S3 *T4;
   9 typedef struct S4 *T5;
  10 struct S4 { union { int c; } d; };
  11 struct S2 { int e; T2 f; int g; };
  12 typedef struct { T3 h; } T6;
  13 typedef struct { int i; } *T7;
  14 struct S3 { T6 j; T7 k; };
  15
  16 void f5 (T4);
  17 void f6 (void (*)(T4));
  18 void f7 (void (*)(T5, T1 *));
  19
  20 void
  21 f1 (T4 x)
  22 {
  23   if (!x->j.h->e)
  24     f5 (x);
  25 }
  26
  27 void
  28 f2 (void)
  29 {
  30   f6 (f1);
  31 }
  32
  33 void
  34 f3 (T5 x, T1 *y)
  35 {
  36 }
  37
  38 void
  39 f4 (void)
  40 {
  41   f7 (f3);
  42 }