tree 70c9f957d8e055dbea3b9640ef9ba94bc42b75c9
parent 31c7c1a27b03c72436e5d657bbe0fea2e635671d
author Wan-Teh Chang <wtc@google.com> 1602546770 -0700
committer Joe Drago <joedrago@gmail.com> 1602700418 -0700

Detect file read error by calling ferror()

If fread() returns a byte count less than 'size', distinguish between
the error and end-of-file conditions by calling ferror().