Viewing file:  c90-const-expr-6.c (1.39 KB) -rw-r--r--
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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 __INTPTR_TYPE__ intptr_t;
/* PR 29116. */
int n = 0, p[n * 0 + 1]; /* { dg-error "variabl|cannot be evaluated" } */
/* PR 31871. */
extern int c[1 + ((intptr_t) (void *) 0)]; /* { dg-error "variab|cannot 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|cannot be evaluated" } */
extern int c2[(int)1.0 ? 1 : 0];
extern int c3[1.0 && 1]; /* { dg-error "variab|cannot be evaluated" } */
extern int c4[(int)1.0 && 1];
extern int c5[1.0 || 1]; /* { dg-error "variab|cannot 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 + ((intptr_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 + ((intptr_t) (void *) 0)]; /* { dg-error "variab|cannot be evaluated" } */
switch (a)
{
case (n * 0 + 1): /* { dg-error "constant" } */
;
}
}
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