gcc/testsuite/c-c++-common/ubsan/align-6.c

   1 /* Limit this to known non-strict alignment targets.  */
   2 /* { dg-do run { target { i?86-*-linux* x86_64-*-linux* } } } */
   3 /* { dg-options "-O -fsanitize=alignment -fsanitize-recover=alignment" } */
   4
   5 struct S { int a; char b; long long c; short d[10]; };
   6 struct T { char a; long long b; };
   7 struct U { char a; int b; int c; long long d; struct S e; struct T f; } __attribute__((packed));
   8 struct V { long long a; struct S b; struct T c; struct U u; } v;
   9
  10 __attribute__((noinline, noclone)) int
  11 foo (struct S *p)
  12 {
  13   volatile int i;
  14   i = p->a;
  15   i = p->a;
  16   i = p->a;
  17   i = p->a;
  18   return p->a;
  19 }
  20
  21 int
  22 main ()
  23 {
  24   if (foo (&v.u.e))
  25     __builtin_abort ();
  26   return 0;
  27 }
  28
  29 /* { dg-output "\.c:14:\[0-9]*: \[^\n\r]*member access within misaligned address 0x\[0-9a-fA-F]* for type 'struct S', which requires \[48] byte alignment.*" } */
  30 /* { dg-output "\.c:15:\[0-9]*: \[^\n\r]*member access within misaligned address 0x\[0-9a-fA-F]* for type 'struct S', which requires \[48] byte alignment.*" } */
  31 /* { dg-output "\.c:16:\[0-9]*: \[^\n\r]*member access within misaligned address 0x\[0-9a-fA-F]* for type 'struct S', which requires \[48] byte alignment.*" } */
  32 /* { dg-output "\.c:17:\[0-9]*: \[^\n\r]*member access within misaligned address 0x\[0-9a-fA-F]* for type 'struct S', which requires \[48] byte alignment.*" } */
  33 /* { dg-output "\.c:18:\[0-9]*: \[^\n\r]*member access within misaligned address 0x\[0-9a-fA-F]* for type 'struct S', which requires \[48] byte alignment" } */