44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=i686-apple-darwin9
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// expected-no-diagnostics
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#define CHECK_SIZE(kind, name, size) extern int name##1[sizeof(kind name) == size ? 1 : -1];
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#define CHECK_ALIGN(kind, name, size) extern int name##2[__alignof(kind name) == size ? 1 : -1];
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// Zero-width bit-fields
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struct a {char x; int : 0; char y;};
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CHECK_SIZE(struct, a, 5)
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CHECK_ALIGN(struct, a, 1)
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union b {char x; int : 0; char y;};
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CHECK_SIZE(union, b, 1)
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CHECK_ALIGN(union, b, 1)
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// Unnamed bit-field align
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struct c {char x; int : 20;};
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CHECK_SIZE(struct, c, 4)
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CHECK_ALIGN(struct, c, 1)
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union d {char x; int : 20;};
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CHECK_SIZE(union, d, 3)
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CHECK_ALIGN(union, d, 1)
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// Bit-field packing
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struct __attribute__((packed)) e {int x : 4, y : 30, z : 30;};
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CHECK_SIZE(struct, e, 8)
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CHECK_ALIGN(struct, e, 1)
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// Alignment on bit-fields
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struct f {__attribute((aligned(8))) int x : 30, y : 30, z : 30;};
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CHECK_SIZE(struct, f, 24)
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CHECK_ALIGN(struct, f, 8)
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// Large structure (overflows i32, in bits).
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struct s0 {
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char a[0x32100000];
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int x:30, y:30;
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};
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CHECK_SIZE(struct, s0, 0x32100008)
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CHECK_ALIGN(struct, s0, 4)
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