| /* { dg-do run } */ |
| /* { dg-options "-fdump-tree-alias" } */ |
| /* { dg-skip-if "" { *-*-* } { "-O0" "-fno-fat-lto-objects" } { "" } } */ |
| |
| extern void abort (void); |
| struct X { |
| int *p; |
| int *q; |
| int *r; |
| }; |
| int __attribute__((noinline)) |
| foo(int i, int j, int k, __SIZE_TYPE__ off) |
| { |
| struct X x; |
| int **p, *q; |
| x.p = &i; |
| x.q = &j; |
| x.r = &k; |
| p = &x.q; |
| p += off; |
| /* *p points to { i, j, k } */ |
| q = *p; |
| return *q; |
| } |
| int main() |
| { |
| if (foo(1, 2, 3, -1) != 1) |
| abort (); |
| if (foo(1, 2, 3, 0) != 2) |
| abort (); |
| if (foo(1, 2, 3, 1) != 3) |
| abort (); |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump "q_\[0-9\]* = { i j k }" "alias" } } */ |
