gcc/testsuite/gcc.dg/asan/nosanitize-and-inline.c

   1 /* { dg-do run } */
   2
   3 /* This is a simplified version of what Emacs does internally,
   4    when marking its stack.  */
   5
   6 static unsigned long sum;
   7 static void *stack_base;
   8
   9 /* A simple substitute for what Emacs actually does.  */
  10 static void
  11 mark_maybe_pointer (void *p)
  12 {
  13   sum ^= (unsigned long) p;
  14 }
  15
  16 static inline void __attribute__ ((no_sanitize_address))
  17 mark_memory (void **start, void **end)
  18 {
  19   void **pp;
  20
  21   if (end < start)
  22     {
  23       void **tem = start;
  24       start = end;
  25       end = tem;
  26     }
  27
  28   for (pp = start; pp < end; pp++)
  29     {
  30       /* This is the dereference that we don't want sanitized.  */
  31       void *p = *pp;
  32
  33       mark_maybe_pointer (p);
  34     }
  35 }
  36
  37 static void
  38 mark_stack (void)
  39 {
  40   void *end;
  41   mark_memory (stack_base, &end);
  42 }
  43
  44 void
  45 garbage_collect (void)
  46 {
  47   mark_stack ();
  48 }
  49
  50 int
  51 main (void)
  52 {
  53   void *dummy;
  54   stack_base = &dummy;
  55   garbage_collect ();
  56   return 0;
  57 }