gcc/testsuite/gcc.dg/tree-ssa/pr45085.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2  -Wuninitialized" } */
   3 struct S { char *s1; long s2; };
   4 struct T { int t1; long t2; long t3; };
   5 extern int fn2 (void);
   6 extern int fn3 (struct T);
   7 extern struct T fn4 ();
   8 extern int fn5 (char **, long *, int);
   9 extern void fn6 (void);
  10 extern void fn7 (void *);
  11 struct S *fn10 ();
  12 static int p;
  13 static void *q;
  14 extern struct T r;
  15
  16 static struct T
  17 fn8 (struct T x, int y)
  18 {
  19   struct S *u = fn10 ();
  20   int v = fn5 (&u->s1, &u->s2, 0);
  21   while (1)
  22     {
  23       if (p)
  24 fn6 ();
  25       if (fn3 (x))
  26 return fn4 ();
  27       if (y & 1)
  28 return r;
  29       v = fn5 (&u->s1, &u->s2, 1);
  30     }
  31 }
  32
  33 struct T
  34 fn9 (struct T x, int y)
  35 {
  36   struct T t = fn8 (x, y);
  37   if (fn2 ())
  38     fn7 (q);
  39   return t;
  40 }
  41
  42 void *
  43 fn1 (void)
  44 {
  45   return fn9;
  46 }