------- Additional Comments From gdr at integrable-solutions dot net 2005-07-14 15:19 ------- Subject: Re: pointer +- integer is never NULL
"falk at debian dot org" <[EMAIL PROTECTED]> writes: | (In reply to comment #4) | > Hmmmm. | > I swear we just had this discussion for VRP purposes, and that a bug was | > recently fixed so that we don't assume that pointer + - integer is NULL. | | Well, I checked C99 and C++, and they explain a few cases, never mentioning | null pointers, and then say everything else is undefined. Maybe this was | different in C89? Seems unlikely, though... I'm failing to find anything in the C++ standard that suggests that the following shall be undefined (reinterpret_cast<int*>(0) + 5) - 5 -- Gaby -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22485
