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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [gcc.dg/] [bf-ms-layout-2.c] - Rev 827
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/* bf-ms-layout.c */ /* Test for MS bitfield layout */ /* Adapted from Donn Terry <donnte@microsoft.com> testcase posted to GCC-patches http://gcc.gnu.org/ml/gcc-patches/2000-08/msg00577.html */ /* { dg-do run { target *-*-interix* *-*-mingw* *-*-cygwin* i?86-*-darwin* } } */ /* { dg-options "-D_TEST_MS_LAYOUT" } */ /* This test uses the attribute instead of the command line option. */ #include <stddef.h> #include <string.h> extern void abort(); #pragma pack(8) #ifdef __GNUC__ #define ATTR __attribute__ ((ms_struct)) #endif struct one { int d; unsigned char a; unsigned short b:7; char c; } ATTR; struct two { int d; unsigned char a; unsigned int b:7; char c; } ATTR; struct three { short d; unsigned short a:3; unsigned short b:9; unsigned char c:7; } ATTR; /* Bitfields of size 0 have some truly odd behaviors. */ struct four { unsigned short a:3; unsigned short b:9; unsigned int :0; /* forces struct alignment to int */ unsigned char c:7; } ATTR; struct five { char a; int :0; /* ignored; prior field is not a bitfield. */ char b; char c; } ATTR; struct six { char a :8; int :0; /* not ignored; prior field IS a bitfield, causes struct alignment as well. */ char b; char c; } ATTR; struct seven { char a:8; char :0; int :0; /* Ignored; prior field is zero size bitfield. */ char b; char c; } ATTR; struct eight { /* ms size 4 */ short b:3; char c; } ATTR; #ifdef _MSC_VER #define LONGLONG __int64 #else #define LONGLONG long long #endif union nine { /* ms size 8 */ LONGLONG a:3; char c; } ATTR; struct ten { /* ms size 16 */ LONGLONG a:3; LONGLONG b:3; char c; } ATTR; #define val(s,f) (s.f) #define check_struct(_X) \ { \ if (sizeof (struct _X) != exp_sizeof_##_X ) \ abort(); \ memcpy(&test_##_X, filler, sizeof(test_##_X));\ if (val(test_##_X,c) != exp_##_X##_c) \ abort(); \ } #define check_union(_X) \ { \ if (sizeof (union _X) != exp_sizeof_##_X ) \ abort(); \ memcpy(&test_##_X, filler, sizeof(test_##_X));\ if (val(test_##_X,c) != exp_##_X##_c) \ abort(); \ } #define check_struct_size(_X) \ { \ if (sizeof (struct _X) != exp_sizeof_##_X ) \ abort(); \ } #define check_struct_off(_X) \ { \ memcpy(&test_##_X, filler, sizeof(test_##_X));\ if (val(test_##_X,c) != exp_##_X##_c) \ abort(); \ } #define check_union_size(_X) \ { \ if (sizeof (union _X) != exp_sizeof_##_X ) \ abort(); \ } #define check_union_off(_X) \ { \ memcpy(&test_##_X, filler, sizeof(test_##_X));\ if (val(test_##_X,c) != exp_##_X##_c) \ abort(); \ } int main(){ unsigned char filler[16]; struct one test_one; struct two test_two; struct three test_three; struct four test_four; struct five test_five; struct six test_six; struct seven test_seven; struct eight test_eight; union nine test_nine; struct ten test_ten; #if defined (_TEST_MS_LAYOUT) || defined (_MSC_VER) size_t exp_sizeof_one = 12; size_t exp_sizeof_two = 16; size_t exp_sizeof_three =6; size_t exp_sizeof_four = 8; size_t exp_sizeof_five = 3; size_t exp_sizeof_six = 8; size_t exp_sizeof_seven = 3; size_t exp_sizeof_eight = 4; size_t exp_sizeof_nine = 8; size_t exp_sizeof_ten = 16; unsigned char exp_one_c = 8; unsigned char exp_two_c = 12; unsigned char exp_three_c = 4; unsigned char exp_four_c = 4; char exp_five_c = 2; char exp_six_c = 5; char exp_seven_c = 2; char exp_eight_c = 2; char exp_nine_c = 0; char exp_ten_c = 8; #else /* testing -mno-ms-bitfields */ size_t exp_sizeof_one = 8; size_t exp_sizeof_two = 8; size_t exp_sizeof_three = 6; size_t exp_sizeof_four = 6; size_t exp_sizeof_five = 6; size_t exp_sizeof_six = 6; size_t exp_sizeof_seven = 6; size_t exp_sizeof_eight = 2; size_t exp_sizeof_nine = 8; size_t exp_sizeof_ten = 8; unsigned short exp_one_c = 6; unsigned int exp_two_c = 6; unsigned char exp_three_c = 64; unsigned char exp_four_c = 4; char exp_five_c = 5; char exp_six_c = 5; char exp_seven_c = 5; char exp_eight_c = 1; char exp_nine_c = 0; char exp_ten_c = 1; #endif unsigned char i; for ( i = 0; i < 16; i++ ) filler[i] = i; check_struct_off (one); check_struct_off (two); check_struct_off (three); check_struct_off (four); check_struct_off (five); check_struct_off (six); check_struct_off (seven); check_struct_off (eight); check_union_off (nine); check_struct_off (ten); check_struct_size (one); check_struct_size (two); check_struct_size (three); check_struct_size (four); check_struct_size (five); check_struct_size (six); check_struct_size (seven); check_struct_size (eight); check_union_size (nine); check_struct_size (ten); return 0; };
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