gcc/testsuite/gcc.dg/uninit-pr63660.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -Wuninitialized" } */
   3
   4 typedef struct
   5 {
   6  int a;
   7  int b;
   8  int c;
   9  int d;
  10  int e;
  11  int f;
  12  int g;
  13  int h;
  14  int i;
  15  int j;
  16 } X;
  17
  18 X *XX(int);
  19
  20 int G();
  21
  22 static void F()
  23 {
  24  X *x;
  25  int m, n;
  26  int xa, xb, xc, xd, xe, xf, xg, xh, xi, xj;
  27
  28  m = G();
  29  n = G();
  30  if ( n & 1 ) xa = G();
  31  if ( n & 2 ) xb = G();
  32  if ( n & 4 ) xc = G();
  33  if ( n & 32 ) xd = G();
  34  if ( n & 16 ) xe = G();
  35  if ( n & 64 ) xf = G();
  36  if ( n & 256 ) xg = G();
  37  if ( n & 512 ) xh = G();
  38  if ( n & 1024 ) xi = G();
  39  if ( n & 2048 ) xj = G();
  40
  41  if ( m >= 64 ) return;
  42  x = XX(m);
  43  if ( n & 1 ) x->a = xa;
  44  if ( n & 2 ) x->b = xb;
  45  if ( n & 4 ) x->c = xc;
  46  if ( n & 32 ) x->d = xd;
  47  if ( n & 16 ) x->e = xe;
  48  if ( n & 64 ) x->f = xf;
  49  if ( n & 256 ) x->g = xg;
  50  if ( n & 512 ) x->h = xh;
  51  if ( n & 1024 ) x->i = xi;
  52  if ( n & 2048 ) x->j = xj; /* { dg-bogus "uninitialized" } */
  53 }
  54
  55 void H()
  56 {
  57  F();
  58 }