init17.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 70 行

#include "fail.h"

#pragma pack(8);

struct X1 {
    short       a[3];
    char        *b;
};

struct X1 v1[] = {
    1,2,3, "4",
    {.b = "8", .a = {5,6,7}},
    {.a = 9,10,11, .b = "12"},
    {.a = {13,14,15}, "16"},
};

void check_X1( struct X1 *p, int b, unsigned line ) {
    if( p->a[0] != b++ ) fail(line);
    if( p->a[1] != b++ ) fail(line);
    if( p->a[2] != b++ ) fail(line);
    if( atol( p->b ) != b ) fail(line);
}

struct X2 {
    char        a[2];
    long        b;
    char        c[3];
};

void check_X2( struct X2 *p ) {
    int b = 1;
    if( p->a[0] != b++ ) fail(__LINE__);
    if( p->a[1] != b++ ) fail(__LINE__);
    if( p->b != b++ ) fail(__LINE__);
    if( p->c[0] != b ) fail(__LINE__);
    if( p->c[1] != 0 ) fail(__LINE__);
    if( p->c[2] != 0 ) fail(__LINE__);
}

void test() {
    struct X2 v = { .b = 0, .a = {1, 2}, 3, .c = {4}, .b = 3 };
    check_X2( &v );
    check_X2( &v );
}

union X3 {
    char a;
    long b;
};
union X3 v2[2] = { {.b=1}, {.a=-1} };

void check_X3( void ) {
    if( v2[0].a != 1 ) fail(__LINE__);
    v2[0].a = 0;
    if( v2[0].b != 0 ) fail(__LINE__);
    if( v2[1].a != (char)-1 ) fail(__LINE__);
    v2[1].a = 0;
    if( v2[1].b != 0 ) fail(__LINE__);
}

int main() {
    test();
    check_X1( &v1[0], 1, __LINE__ );
    check_X1( &v1[1], 5, __LINE__ );
    check_X1( &v1[2], 9, __LINE__ );
    check_X1( &v1[3], 13, __LINE__ );
    check_X3();
    _PASS;
}