c - What purpose does the declaration "int t[0];" serve? -


what purpose of following declaration? 

struct test {      int field1;      int field2[0]; };

that's 0 length array. according http://gcc.gnu.org/onlinedocs/gcc/zero-length.html:

zero-length arrays allowed in gnu c. useful last element of structure header variable-length object:

 struct line {    int length;    char contents[0];  };   struct line *thisline = (struct line *)  malloc (sizeof (struct line) + this_length);  thisline->length = this_length;

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