diff options
Diffstat (limited to 'test/regression/packedstruct2.c')
-rw-r--r-- | test/regression/packedstruct2.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/test/regression/packedstruct2.c b/test/regression/packedstruct2.c new file mode 100644 index 00000000..0c383a47 --- /dev/null +++ b/test/regression/packedstruct2.c @@ -0,0 +1,69 @@ +/* Initialization of packed structs */ + +#include <stdio.h> + +/* Simple packing */ + +#pragma pack(1) + +struct s1 { unsigned short x; int y; char z; }; + +struct s1 s1 = { 2345, -12345678, 'x' }; + +void test1(void) +{ + printf("s1 = {x = %d, y = %d, z = '%c'}\n\n", s1.x, s1.y, s1.z); +} + +/* Now with byte-swapped fields */ + +#pragma pack(1,1,1) + +struct s3 { + unsigned char x; + unsigned short y; + unsigned int z; + signed short v; + signed int w; + char * p; + unsigned int t[3]; + unsigned char s[2]; +}; + +struct s3 s3 = { + 42, 123, 456789, -333, -314159, 0, + { 111, 222, 333 }, + { 'o', 'k' } +}; + +void test3(void) +{ + printf("s3 = {x = %u, y = %u, z = %u, v = %d, w = %d, p is %s, t = {%d,%d,%d}, s = {'%c','%c'}}\n\n", + s3.x, s3.y, s3.z, s3.v, s3.w, + (s3.p == 0 ? "ok" : "BAD"), + s3.t[0], s3.t[1], s3.t[2], + s3.s[0], s3.s[1]); +} + +/* Back to normal */ + +#pragma pack() + +struct s4 { unsigned short x; int y; double z; }; + +struct s4 s4 = { 123, -456789, 3.14159 }; + +void test4(void) +{ + printf("s4 = {x = %d, y = %d, z = %.5f}\n\n", s4.x, s4.y, s4.z); +} + +/* Test harness */ + +int main(int argc, char ** argv) +{ + test1(); + test3(); + test4(); + return 0; +} |