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/* PR c/51034 */
/* { dg-do compile } */
/* { dg-options "-std=gnu99" } */
struct S;
int
main ()
{
struct R { typeof (((struct W) {})) x; } r; /* { dg-error "invalid use of undefined type" } */
struct S { typeof (((struct S) {})) x; } s; /* { dg-error "invalid use of undefined type" } */
struct T { int x[sizeof ((struct T) {})]; } t;/* { dg-error "invalid use of undefined type" } */
struct U { int x[sizeof((struct V){})];} u; /* { dg-error "invalid use of undefined type" } */
}
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