gcc/testsuite/gcc.dg/uninit-pred-8_a.c

   1
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wuninitialized -O2" } */
   4 /* Pick a particular tuning to pin down BRANCH_COST.  */
   5 /* { dg-additional-options "-mtune=cortex-a15" { target arm*-*-* } } */
   6
   7 int g;
   8 void bar();
   9 void blah(int);
  10
  11 int foo (int n, int l, int m, int r)
  12 {
  13   int v;
  14
  15   if (n || m || r || l)
  16     v = r;
  17
  18   if (m) g++;
  19   else   bar();
  20
  21   if ( n ||  m || r || l)
  22       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  23
  24   if ( n )
  25       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  26
  27   if ( l )
  28       blah(v); /* { dg-bogus "uninitialized" "bogus warning" } */
  29
  30   return 0;
  31 }
  32
  33 int foo_2 (int n, int l, int m, int r)
  34 {
  35   int v;
  36
  37   if (n || m || r )
  38     v = r;
  39
  40   if (m) g++;
  41   else   bar();
  42
  43   if ( n || m || r || l)
  44       blah(v); /* { dg-warning "uninitialized" "warning" } */
  45
  46   return 0;
  47 }