Fair enough, cast is needed. I replied in the main thread with a fixed patch. Thank you, Konstantin. On Sun, Sep 13, 2020 at 11:43 AM Alejandro Colomar <colomar.6.4.3@xxxxxxxxx> wrote: > > > Such erroneous reporting happens for inode values greater than maximum > > value which can be stored in signed long. Casting does not seem to be > > necessary here. Printing inode as unsigned long long fixes the issue. > > The cast is necessary. > > Relevant standard: C18 §6.5.2.2 6 > > Details: 'ino_t' may (and will likely) be defined as 'unsigned long'. > If you try to print an 'unsigned long' with "%llu" you will: > - have Undefined Behavior (and a warning) if 'sizeof(long) < sizeof(long > long)'. > - have a warning if 'sizeof(long) == sizeof(long long)'. > > So if you want to use 'unsigned long long', you'll need to cast. > > Cheers, > > Alex