gcc/testsuite/g++.dg/ubsan/null-5.C

   1 // { dg-do run }
   2 // { dg-options "-O -fsanitize=null -fsanitize-undefined-trap-on-error -fdump-tree-sanopt-details" }
   3 // { dg-skip-if "" { *-*-* } { "-flto -fno-fat-lto-objects" } }
   4 // { dg-shouldfail "ubsan" }
   5
   6 int
   7 main (void)
   8 {
   9   int *p = 0;
  10
  11   int &r1 = *p;
  12   int &r2 = *p;
  13   int &r3 = *p;
  14   int &r4 = *p;
  15   int &r5 = *p;
  16 }
  17
  18 // { dg-final { scan-tree-dump-times "Optimizing" 4 "sanopt"} }
  19 // { dg-final { cleanup-tree-dump "sanopt" } }