这两天被struct传参给郁闷死了。今天终于解决了。
比如有一个struct如下:
struct _ns1__Add_USCORESensorDataArray
{ struct xsd__base64Binary *btSensoridArr; /* optional element of type xsd:base64Binary */ struct ns1__ArrayOfUnsignedShort *u16DeviceIDArr; /* optional element of type ns1:ArrayOfUnsignedShort */ struct ns1__ArrayOfDouble *dSensorValueArr; /* optional element of type ns1:ArrayOfDouble */ unsigned short u16Length; /* required element of type xsd:unsignedShort */};它的子struct分别如下:
/// Built-in type "xs:base64Binary".
struct xsd__base64Binary{ unsigned char *__ptr; int __size; char *id, *type, *options; // NOTE: for DIME and MTOM XOP attachments only};struct ns1__ArrayOfUnsignedShort
{ /// Size of array of unsigned short* is 0..unbounded $int __sizeunsignedShort 0;/// Array unsigned short* of length 0..unbounded unsigned short* unsignedShort 0;};struct ns1__ArrayOfDouble
{ /// Size of array of double* is 0..unbounded $int __sizedouble_ 0;/// Array double* of length 0..unbounded double* double_ 0;};
struct _ns1__Add_USCORESensorDataArray a;
然后可以看到,,,如果是给a赋值,,,
必须这样赋。
struct ns1__ArrayOfUnsignedShort b;
struct ns1__ArrayOfDouble c;unsigned short loc_i = 200;
unsigned char port_i = 1; double d_i= 5000;b.unsignedShort = &loc_i;
b.__sizeunsignedShort = sizeof(loc_i);a.u16DeviceIDArr = &b;
因为虽然申明了a, 但是a没有赋初始值,然后初始值就没有初始地址。如果直接调用a会发生段错误。
此时需要把子struct 申明,如b。
然后用b一样的类型地址赋给a的值,这样才不会有段错误。