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/* Test constraints on unary '&': PR 22367. */
/* { dg-do compile } */
/* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
extern void v;
void f1 (void) { &v; } /* { dg-error "taking address of expression of type 'void'" } */
extern void *pv;
void f2 (void) { &*pv; } /* { dg-warning "dereferencing" } */
/* { dg-error "taking address of expression of type 'void'" "C90 only error" { target *-*-* } 10 } */
extern const void cv;
void f3 (void) { &cv; }
extern const void *pcv;
void f4 (void) { &*pcv; } /* { dg-warning "dereferencing" } */
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