ZYAN_STRING_HAS_FIXED_CAPACITY
if (string->flags & ZYAN_STRING_HAS_FIXED_CAPACITY)
string->flags = ZYAN_STRING_HAS_FIXED_CAPACITY;
buffer->string.flags = ZYAN_STRING_HAS_FIXED_CAPACITY;
buffer->string.flags = ZYAN_STRING_HAS_FIXED_CAPACITY;