| /* { dg-do run } */ |
| /* { dg-options "-fdump-tree-alias" } */ |
| /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */ |
| |
| typedef __PTRDIFF_TYPE__ intptr_t; |
| |
| int i; |
| void __attribute__((noinline)) |
| foo(long b, intptr_t q) |
| { |
| int *y; |
| int **a = &y, **x; |
| int ***p; |
| if (b) |
| p = (int ***)q; |
| else |
| p = &a; |
| x = *p; |
| *x = &i; /* *ANYTHING = &i has to make sure that y points to i. */ |
| *y = 0; |
| } |
| extern void abort (void); |
| int main() |
| { |
| i = 1; |
| foo (0, 0); |
| if (i != 0) |
| abort (); |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump "y.._., name memory tag: NMT..., is dereferenced, points-to vars: { i }" "alias" } } */ |
| /* { dg-final { cleanup-tree-dump "alias" } } */ |
