derek.holloway
7502bf64a4
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316 lines
8.7 KiB
C
316 lines
8.7 KiB
C
// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=i686-apple-darwin9
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=arm-linux-gnueabihf
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=aarch64-linux-gnu
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=x86_64-pc-linux-gnu
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// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=x86_64-scei-ps4
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// RUN: %clang_cc1 %s -fsyntax-only -verify=checkms -triple=i686-apple-darwin9 -Wms-bitfield-padding
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// expected-no-diagnostics
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#include <stddef.h>
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#define CHECK_SIZE(kind, name, size) \
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extern int name##_1[sizeof(kind name) == size ? 1 : -1];
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#define CHECK_ALIGN(kind, name, size) \
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extern int name##_2[__alignof(kind name) == size ? 1 : -1];
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#define CHECK_OFFSET(kind, name, member, offset) \
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extern int name##_3[offsetof(kind name, member) == offset ? 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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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(struct, a, 8)
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CHECK_ALIGN(struct, a, 4)
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#else
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CHECK_SIZE(struct, a, 5)
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CHECK_ALIGN(struct, a, 1)
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#endif
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// Zero-width bit-fields with packed
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struct __attribute__((packed)) a2 {
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short x : 9; // #a2x
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char : 0; // #a2anon
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// checkms-warning@-1 {{bit-field '' of type 'char' has a different storage size than the preceding bit-field (1 vs 2 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#a2x {{preceding bit-field 'x' declared here with type 'short'}}
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int y : 17;
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// checkms-warning@-1 {{bit-field 'y' of type 'int' has a different storage size than the preceding bit-field (4 vs 1 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#a2anon {{preceding bit-field '' declared here with type 'char'}}
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};
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CHECK_SIZE(struct, a2, 5)
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CHECK_ALIGN(struct, a2, 1)
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// Zero-width bit-fields at the end of packed struct
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struct __attribute__((packed)) a3 {
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short x : 9; // #a3x
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int : 0;
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// checkms-warning@-1 {{bit-field '' of type 'int' has a different storage size than the preceding bit-field (4 vs 2 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#a3x {{preceding bit-field 'x' declared here with type 'short'}}
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};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(struct, a3, 4)
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CHECK_ALIGN(struct, a3, 4)
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#else
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CHECK_SIZE(struct, a3, 4)
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CHECK_ALIGN(struct, a3, 1)
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#endif
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// For comparison, non-zero-width bit-fields at the end of packed struct
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struct __attribute__((packed)) a4 {
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short x : 9; // #a4x
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int : 1;
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// checkms-warning@-1 {{bit-field '' of type 'int' has a different storage size than the preceding bit-field (4 vs 2 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#a4x {{preceding bit-field 'x' declared here with type 'short'}}
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};
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CHECK_SIZE(struct, a4, 2)
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CHECK_ALIGN(struct, a4, 1)
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union b {char x; int : 0; char y;};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(union, b, 4)
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CHECK_ALIGN(union, b, 4)
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#else
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CHECK_SIZE(union, b, 1)
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CHECK_ALIGN(union, b, 1)
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#endif
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// Unnamed bit-field align
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struct c {char x; int : 20;};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(struct, c, 4)
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CHECK_ALIGN(struct, c, 4)
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#else
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CHECK_SIZE(struct, c, 4)
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CHECK_ALIGN(struct, c, 1)
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#endif
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union d {char x; int : 20;};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(union, d, 4)
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CHECK_ALIGN(union, d, 4)
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#else
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CHECK_SIZE(union, d, 3)
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CHECK_ALIGN(union, d, 1)
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#endif
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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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// Bit-field with explicit align bigger than normal.
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struct g0 {
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char a;
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__attribute__((aligned(16))) int b : 1;
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char c;
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};
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g0, 16);
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CHECK_ALIGN(struct, g0, 16);
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CHECK_OFFSET(struct, g0, c, 2);
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#else
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CHECK_SIZE(struct, g0, 32);
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CHECK_ALIGN(struct, g0, 16);
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CHECK_OFFSET(struct, g0, c, 17);
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#endif
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// Bit-field with explicit align smaller than normal.
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struct g1 {
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char a;
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__attribute__((aligned(2))) int b : 1;
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char c;
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};
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CHECK_SIZE(struct, g1, 4);
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CHECK_ALIGN(struct, g1, 4);
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#if defined(__ORBIS__)
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CHECK_OFFSET(struct, g1, c, 2);
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#else
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CHECK_OFFSET(struct, g1, c, 3);
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#endif
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// Same as above but without explicit align.
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struct g2 {
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char a;
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int b : 1;
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char c;
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};
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CHECK_SIZE(struct, g2, 4);
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CHECK_ALIGN(struct, g2, 4);
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CHECK_OFFSET(struct, g2, c, 2);
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// Explicit attribute align on bit-field has precedence over packed attribute
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// applied too the struct.
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struct __attribute__((packed)) g3 {
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char a;
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__attribute__((aligned(16))) int b : 1;
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char c;
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};
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CHECK_ALIGN(struct, g3, 16);
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g3, 16);
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CHECK_OFFSET(struct, g3, c, 2);
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#else
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CHECK_SIZE(struct, g3, 32);
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CHECK_OFFSET(struct, g3, c, 17);
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#endif
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struct __attribute__((packed)) g4 {
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char a;
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__attribute__((aligned(2))) int b : 1;
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char c;
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};
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CHECK_SIZE(struct, g4, 4);
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CHECK_ALIGN(struct, g4, 2);
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#if defined(__ORBIS__)
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CHECK_OFFSET(struct, g4, c, 2);
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#else
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CHECK_OFFSET(struct, g4, c, 3);
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#endif
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struct g5 {
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char : 1; // #g5
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__attribute__((aligned(1))) int n : 24;
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// checkms-warning@-1 {{bit-field 'n' of type 'int' has a different storage size than the preceding bit-field (4 vs 1 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#g5 {{preceding bit-field '' declared here with type 'char'}}
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};
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CHECK_SIZE(struct, g5, 4);
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CHECK_ALIGN(struct, g5, 4);
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struct __attribute__((packed)) g6 {
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char : 1; // #g6
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__attribute__((aligned(1))) int n : 24;
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// checkms-warning@-1 {{bit-field 'n' of type 'int' has a different storage size than the preceding bit-field (4 vs 1 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#g6 {{preceding bit-field '' declared here with type 'char'}}
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};
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CHECK_SIZE(struct, g6, 4);
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CHECK_ALIGN(struct, g6, 1);
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struct g7 {
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char : 1; // #g7
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__attribute__((aligned(1))) int n : 25;
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// checkms-warning@-1 {{bit-field 'n' of type 'int' has a different storage size than the preceding bit-field (4 vs 1 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#g7 {{preceding bit-field '' declared here with type 'char'}}
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};
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g7, 4);
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#else
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CHECK_SIZE(struct, g7, 8);
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#endif
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CHECK_ALIGN(struct, g7, 4);
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struct __attribute__((packed)) g8 {
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char : 1; // #g8
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__attribute__((aligned(1))) int n : 25;
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// checkms-warning@-1 {{bit-field 'n' of type 'int' has a different storage size than the preceding bit-field (4 vs 1 bytes) and will not be packed under the Microsoft ABI}}
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// checkms-note@#g8 {{preceding bit-field '' declared here with type 'char'}}
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};
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g8, 4);
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#else
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CHECK_SIZE(struct, g8, 5);
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#endif
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CHECK_ALIGN(struct, g8, 1);
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struct g9 {
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__attribute__((aligned(1))) char a : 2, b : 2, c : 2, d : 2, e : 2;
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int i;
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};
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g9, 8);
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#else
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CHECK_SIZE(struct, g9, 12);
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#endif
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CHECK_ALIGN(struct, g9, 4);
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struct __attribute__((packed)) g10 {
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__attribute__((aligned(1))) char a : 2, b : 2, c : 2, d : 2, e : 2;
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int i;
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};
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#if defined(__ORBIS__)
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CHECK_SIZE(struct, g10, 6);
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#else
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CHECK_SIZE(struct, g10, 9);
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#endif
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CHECK_ALIGN(struct, g10, 1);
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struct g11 {
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char a;
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__attribute__((aligned(1))) long long b : 62;
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char c;
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};
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#if defined(__arm__) || defined(__aarch64__) || defined(__x86_64__)
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CHECK_SIZE(struct, g11, 24);
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CHECK_ALIGN(struct, g11, 8);
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CHECK_OFFSET(struct, g11, c, 16);
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#else
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CHECK_SIZE(struct, g11, 16);
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CHECK_ALIGN(struct, g11, 4);
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CHECK_OFFSET(struct, g11, c, 12);
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#endif
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struct __attribute__((packed)) g12 {
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char a;
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__attribute__((aligned(1))) long long b : 62;
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char c;
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};
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CHECK_SIZE(struct, g12, 10);
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CHECK_ALIGN(struct, g12, 1);
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CHECK_OFFSET(struct, g12, c, 9);
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struct g13 {
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char a;
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__attribute__((aligned(1))) long long : 0;
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char c;
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};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(struct, g13, 16);
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CHECK_ALIGN(struct, g13, 8);
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CHECK_OFFSET(struct, g13, c, 8);
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#elif defined(__x86_64__)
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CHECK_SIZE(struct, g13, 9);
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CHECK_ALIGN(struct, g13, 1);
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CHECK_OFFSET(struct, g13, c, 8);
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#else
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CHECK_SIZE(struct, g13, 5);
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CHECK_ALIGN(struct, g13, 1);
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CHECK_OFFSET(struct, g13, c, 4);
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#endif
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struct __attribute__((packed)) g14 {
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char a;
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__attribute__((aligned(1))) long long : 0;
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char c;
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};
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#if defined(__arm__) || defined(__aarch64__)
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CHECK_SIZE(struct, g14, 16);
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CHECK_ALIGN(struct, g14, 8);
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CHECK_OFFSET(struct, g14, c, 8);
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#elif defined(__x86_64__)
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CHECK_SIZE(struct, g14, 9);
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CHECK_ALIGN(struct, g14, 1);
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CHECK_OFFSET(struct, g14, c, 8);
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#else
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CHECK_SIZE(struct, g14, 5);
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CHECK_ALIGN(struct, g14, 1);
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CHECK_OFFSET(struct, g14, c, 4);
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#endif
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