gcc/testsuite/c-c++-common/ubsan/object-size-8.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "" { *-*-* } { "*" } { "-O2" } } */
   3 /* { dg-options "-fsanitize=undefined" } */
   4
   5 struct S { int a; int b; };
   6
   7 static inline __attribute__((always_inline)) int
   8 foo (struct S *p)
   9 {
  10   volatile int a;
  11   a = p->a; /* OK */
  12   return p->b;
  13 }
  14
  15 int
  16 bar (void)
  17 {
  18   struct S *p = (struct S *) __builtin_calloc (sizeof (int) + sizeof (int) / 2, 1);
  19   return foo (p);
  20 }
  21
  22 int
  23 main (void)
  24 {
  25   bar ();
  26   return 0;
  27 }
  28
  29 /* { dg-output "load of address \[^\n\r]* with insufficient space for an object of type 'int'\[^\n\r]*(\n|\r\n|\r)" } */
  30 /* { dg-output "\[^\n\r]*note: pointer points here\[^\n\r]*(\n|\r\n|\r)" } */
  31 /* { dg-output "\[^\n\r]*\[^\n\r]*(\n|\r\n|\r)" } */
  32 /* { dg-output "\[^\n\r]*\\^" } */