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/* Test for constant expressions: operands and casts not permitted in
   integer constant expressions.  */
/* Origin: Joseph Myers <joseph@codesourcery.com> */
/* { dg-do compile } */
/* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
 
__extension__ typedef __PTRDIFF_TYPE__ ptrdiff_t;
 
/* PR 29116.  */
int n = 0, p[n * 0 + 1]; /* { dg-error "variabl|can't be evaluated" } */
 
/* PR 31871.  */
extern int c[1 + ((ptrdiff_t) (void *) 0)]; /* { dg-error "variab|can't be evaluated" } */
 
/* Implicit conversions from floating-point constants are not OK,
   although explicit ones are.  */
extern int c1[1.0 ? 1 : 0]; /* { dg-error "variab|can't be evaluated" } */
 
extern int c2[(int)1.0 ? 1 : 0];
 
extern int c3[1.0 && 1]; /* { dg-error "variab|can't be evaluated" } */
 
extern int c4[(int)1.0 && 1];
 
extern int c5[1.0 || 1]; /* { dg-error "variab|can't be evaluated" } */
 
extern int c6[(int)1.0 || 1];
 
/* Similar with various other cases where integer constant expressions
   are required.  */
 
struct s {
  int a : (n * 0 + 1); /* { dg-error "constant" } */
};
 
enum e {
  E = (1 + ((ptrdiff_t) (void *) 0)), /* { dg-error "constant" } */
  E2 = 0
};
 
enum f {
  F = (1 ? 1 : n), /* { dg-error "constant" } */
  F2 = 0
};
 
void
f (int a)
{
  int v[1 + ((ptrdiff_t) (void *) 0)]; /* { dg-error "variab|can't be evaluated" } */
  switch (a)
    {
    case (n * 0 + 1): /* { dg-error "constant" } */
      ;
    }
}