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jeremybenn |
/* Test for constant expressions: GNU extensions. */
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/* Origin: Joseph Myers <joseph@codesourcery.com> */
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/* { dg-do compile } */
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/* { dg-options "-std=gnu90 -pedantic-errors" } */
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int n;
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void
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f (void)
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{
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int i = 0;
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int a[n]; /* { dg-error "ISO C90 forbids variable length array" } */
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enum e1 {
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/* Integer constant expressions may not contain statement
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expressions (not a permitted operand). */
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E1 = (1 ? 0 : ({ 0; })), /* { dg-error "constant expression" } */
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/* { dg-error "ISO C forbids braced-groups" "ISO" { target *-*-* } 16 } */
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/* Real and imaginary parts act like other arithmetic
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operators. */
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E2 = __real__ (1 ? 0 : i++), /* { dg-error "constant expression" } */
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E3 = __real__ 0,
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E4 = __imag__ (1 ? 0 : i++), /* { dg-error "constant" } */
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E5 = __imag__ 0,
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/* __alignof__ always constant. */
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E6 = __alignof__ (int[n]), /* { dg-error "ISO C90 forbids variable length array" } */
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E7 = __alignof__ (a),
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/* __extension__ ignored for constant expression purposes. */
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E8 = __extension__ (1 ? 0 : i++), /* { dg-error "constant expression" } */
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E9 = __extension__ 0,
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/* Conditional expressions with omitted arguments act like the
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standard type. */
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E10 = (1 ? : i++), /* { dg-error "constant expression" } */
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/* { dg-error "ISO C forbids omitting" "ISO" { target *-*-* } 32 } */
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E11 = (1 ? : 0) /* { dg-error "ISO C forbids omitting" } */
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};
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enum e2 {
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/* Complex integer constants may be cast directly to integer
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types, but not after further arithmetic on them. */
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F1 = (int) (_Complex int) 2i, /* { dg-error "constant expression" } */
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/* { dg-error "complex" "complex" { target *-*-* } 39 } */
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/* { dg-error "imaginary" "imaginary" { target *-*-* } 39 } */
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F2 = (int) +2i, /* { dg-error "constant expression" } */
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/* { dg-error "imaginary" "ISO" { target *-*-* } 42 } */
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F3 = (int) (1 + 2i), /* { dg-error "constant expression" } */
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/* { dg-error "imaginary" "ISO" { target *-*-* } 44 } */
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F4 = (int) 2i /* { dg-error "imaginary" } */
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};
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static double dr = __real__ (1.0 + 2.0i);
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/* { dg-error "imaginary" "ISO" { target *-*-* } 48 } */
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static double di = __imag__ (1.0 + 2.0i);
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/* { dg-error "imaginary" "ISO" { target *-*-* } 50 } */
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/* Statement expressions allowed in unevaluated subexpressions in
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initializers in gnu99 but not gnu89. */
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static int j = (1 ? 0 : ({ 0; })); /* { dg-error "constant expression" } */
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/* { dg-error "braced" "ISO" { target *-*-* } 54 } */
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}
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