This question is not appropriate on this mailing list, questions about using GCC should be sent to the gcc-h...@gcc.gnu.org list, please take any follow up there instead, thanks.
On 29 April 2012 07:14, Qun-Ying wrote: > > No warning at all. Should gcc warn about the *next pointer points to > an unknown structure? No. next doesn't point to anything, it's NULL, which is safe and entirely correct behaviour for a pointer.
