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/* Test for constant expressions: GNU extensions. */
/* Origin: Joseph Myers <joseph@codesourcery.com> */
/* { dg-do compile } */
/* { dg-options "-std=gnu99 -pedantic-errors" } */
int n;
void
f (void)
{
int i = 0;
int a[n];
enum e1 {
/* Integer constant expressions may not contain statement
expressions (not a permitted operand). */
E1 = (1 ? 0 : ({ 0; })), /* { dg-error "constant expression" } */
/* { dg-error "ISO C forbids braced-groups" "ISO" { target *-*-* } 16 } */
/* Real and imaginary parts act like other arithmetic
operators. */
E2 = __real__ (1 ? 0 : i++), /* { dg-error "constant expression" } */
E3 = __real__ 0,
E4 = __imag__ (1 ? 0 : i++), /* { dg-error "constant" } */
E5 = __imag__ 0,
/* __alignof__ always constant. */
E6 = __alignof__ (int[n]),
E7 = __alignof__ (a), /* { dg-error "__alignof__ \\(expression\\)" } */
/* __extension__ ignored for constant expression purposes. */
E8 = __extension__ (1 ? 0 : i++), /* { dg-error "constant expression" } */
E9 = __extension__ 0,
/* Conditional expressions with omitted arguments act like the
standard type. */
E10 = (1 ? : i++), /* { dg-error "constant expression" } */
/* { dg-error "ISO C forbids omitting" "ISO" { target *-*-* } 32 } */
E11 = (1 ? : 0) /* { dg-error "ISO C forbids omitting" } */
};
enum e2 {
/* Complex integer constants may be cast directly to integer
types, but not after further arithmetic on them. */
F1 = (int) (_Complex int) 2i, /* { dg-error "constant expression" } */
/* { dg-error "complex" "complex" { target *-*-* } 39 } */
/* { dg-error "imaginary" "imaginary" { target *-*-* } 39 } */
F2 = (int) +2i, /* { dg-error "constant expression" } */
/* { dg-error "imaginary" "ISO" { target *-*-* } 42 } */
F3 = (int) (1 + 2i), /* { dg-error "constant expression" } */
/* { dg-error "imaginary" "ISO" { target *-*-* } 44 } */
F4 = (int) 2i /* { dg-error "imaginary" } */
};
static double dr = __real__ (1.0 + 2.0i);
/* { dg-error "imaginary" "ISO" { target *-*-* } 48 } */
static double di = __imag__ (1.0 + 2.0i);
/* { dg-error "imaginary" "ISO" { target *-*-* } 50 } */
/* Statement expressions allowed in unevaluated subexpressions in
initializers in gnu99 but not gnu89. */
static int j = (1 ? 0 : ({ 0; }));
/* { dg-error "braced" "ISO" { target *-*-* } 54 } */
}
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