Jan Engelhardt <jengelh@xxxxxxxxxx> writes: > On Saturday 2010-06-12 03:44, Ian Lance Taylor wrote: >> >>> Since in this particular case, member is the first field, >>> one could also write >>> >>> for (pos = (struct item *)clh.next; ...) >>> >>> I hear that >>> >>> "C specifies that a struct * can be converted to and from a >>> pointer to its first element." >>> >>> Does that change anything? >> >>Yes, it should generally be OK to cast between a pointer to a struct >>type and a pointer to the type of the first element of the struct. > > So could it be that the aliasing optimizations are overzealous here? I don't know, because that wasn't what you were doing. Ian
