85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify -std=c11 -Wno-unused-value
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enum e0; // expected-note{{forward declaration of 'enum e0'}}
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struct a {
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int a : -1; // expected-error{{bit-field 'a' has negative width}}
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// rdar://6081627
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int b : 33; // expected-error{{width of bit-field 'b' (33 bits) exceeds width of its type (32 bits)}}
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int c : (1 + 0.25); // expected-error{{expression is not an integer constant expression}}
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int d : (int)(1 + 0.25);
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// rdar://6138816
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int e : 0; // expected-error {{bit-field 'e' has zero width}}
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float xx : 4; // expected-error {{bit-field 'xx' has non-integral type}}
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// PR3607
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enum e0 f : 1; // expected-error {{field has incomplete type 'enum e0'}}
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int g : (_Bool)1;
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// PR4017
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char : 10; // expected-error {{width of anonymous bit-field (10 bits) exceeds width of its type (8 bits)}}
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unsigned : -2; // expected-error {{anonymous bit-field has negative width (-2)}}
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float : 12; // expected-error {{anonymous bit-field has non-integral type 'float'}}
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_Bool : 2; // expected-error {{width of anonymous bit-field (2 bits) exceeds width of its type (1 bit)}}
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_Bool h : 5; // expected-error {{width of bit-field 'h' (5 bits) exceeds width of its type (1 bit)}}
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};
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struct b {unsigned x : 2;} x;
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__typeof__(x.x+1) y;
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int y;
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struct {unsigned x : 2;} x2;
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__typeof__((x.x+=1)+1) y;
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__typeof__((0,x.x)+1) y;
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__typeof__(x.x<<1) y;
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int y;
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struct PR8025 {
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double : 2; // expected-error{{anonymous bit-field has non-integral type 'double'}}
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};
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struct Test4 {
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unsigned bitX : 4;
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unsigned bitY : 4;
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unsigned var;
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};
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void test4(struct Test4 *t) {
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(void) sizeof(t->bitX); // expected-error {{invalid application of 'sizeof' to bit-field}}
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(void) sizeof((t->bitY)); // expected-error {{invalid application of 'sizeof' to bit-field}}
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(void) sizeof(t->bitX = 4); // not a bitfield designator in C
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(void) sizeof(t->bitX += 4); // not a bitfield designator in C
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(void) sizeof((void) 0, t->bitX); // not a bitfield designator in C
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(void) sizeof(t->var ? t->bitX : t->bitY); // not a bitfield designator in C
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(void) sizeof(t->var ? t->bitX : t->bitX); // not a bitfield designator in C
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}
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typedef unsigned Unsigned;
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typedef signed Signed;
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struct Test5 { unsigned n : 2; } t5;
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// Bitfield is unsigned
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struct Test5 sometest5 = {-1};
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typedef __typeof__(+t5.n) Signed; // ... but promotes to signed.
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typedef __typeof__(t5.n + 0) Signed; // Arithmetic promotes.
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typedef __typeof__(+(t5.n = 0)) Signed; // FIXME: Assignment should not; the result
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typedef __typeof__(+(t5.n += 0)) Signed; // is a non-bit-field lvalue of type unsigned.
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typedef __typeof__(+(t5.n *= 0)) Signed;
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typedef __typeof__(+(++t5.n)) Signed; // FIXME: Increment is equivalent to compound-assignment.
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typedef __typeof__(+(--t5.n)) Signed; // This should not promote to signed.
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typedef __typeof__(+(t5.n++)) Unsigned; // Post-increment is underspecified, but seems to
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typedef __typeof__(+(t5.n--)) Unsigned; // also act like compound-assignment.
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struct Test6 {
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: 0.0; // expected-error{{type name requires a specifier or qualifier}}
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};
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