embedded-4_9-branch/gcc/testsuite/c-c++-common/asan/no-redundant-instrumentation-7.c

   1 /* { dg-options "-fdump-tree-sanopt" } */
   2 /* { dg-do compile } */
   3 /* { dg-skip-if "" { *-*-* } { "*" } { "-O0" } } */
   4
   5 char e[200];
   6
   7 struct S
   8 {
   9   char a[100];
  10   char b[100];
  11 } s;
  12
  13 int
  14 foo  (int *a, char *b, char *c)
  15 {
  16   /* 2 checks for s.a, 2 checks for e.  */
  17   int d = __builtin_memcmp (s.a, e, 100);
  18   /* One check for s.a and one check for e.  */
  19   d += __builtin_memcmp (s.a, e, 200);
  20   /* For a total of 6 checks.  */
  21   return d;
  22 }
  23
  24 /* { dg-final { scan-tree-dump-times "& 7" 6 "sanopt" } } */
  25 /* { dg-final { scan-tree-dump-times "__builtin___asan_report_load_n" 4 "sanopt" } } */
  26 /* { dg-final { scan-tree-dump-not "__builtin___asan_report_store" "sanopt" } } */
  27 /* { dg-final { cleanup-tree-dump "sanopt" } } */