?? pr21985.c
字號:
/* { dg-do compile } *//* { dg-options "-O1 -fdump-tree-vars" } */struct{ struct { int a; int b; } a[100];} a;typedef __SIZE_TYPE__ size_t;void foo(size_t);size_t *bar (void);intmain (void){ size_t *b = bar (); /* This should be folded. */ foo (&a.a[50].a - &a.a[33].b); foo ((size_t) &a.a[50].b - (size_t) &a); /* And this should not. */ foo ((size_t) &b - (size_t) b); return 0;}/* Two of the calls to foo should be folded to just foo(constant). *//* { dg-final { scan-tree-dump-times "foo \\(\[0-9\]*\\)" 2 "vars" } } *//* { dg-final { cleanup-tree-dump "vars" } } */
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