| /* { dg-do run } */ |
| /* { dg-require-effective-target stdint_types } */ |
| /* { dg-options "-fdump-tree-alias" } */ |
| /* { dg-skip-if "" { *-*-* } { "-O0" "-fno-fat-lto-objects" } { "" } } */ |
| |
| #include <stdint.h> |
| |
| int i; |
| uintptr_t __attribute__((noinline,const)) bar(int ***p) { return (uintptr_t)p; } |
| void __attribute__((noinline)) |
| foo(void) |
| { |
| int *y; |
| int **a = &y, **x; |
| int ***p; |
| uintptr_t b; |
| b = bar(&a); |
| p = (int ***)b; |
| 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 (); |
| if (i != 0) |
| abort (); |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump "y.\?.._. = { i }" "alias" } } */ |
| /* { dg-final { scan-tree-dump "y.\?.._., points-to NULL, points-to vars: { D..... }" "alias" } } */ |
