* Bernhard Voelker: > On 5/6/19 2:05 PM, Florian Weimer wrote: >>>> On 4/29/19 2:45 PM, Florian Weimer wrote: >>>>> I get that error checking is important. But why not just use ferror and >>>>> fflush? Closing the streams is excessive and tends to introduce >>>>> use-after-free issues, as evidenced by the sanitizer workarounds. > >> This means that for Linux at least, close_stdout should just call >> fflush, not fclose. > > What is the problem? I mean if it is use-after-free as mentioned in > the first mail, then write() after fflush() without error checking via > another fflush() is in the same category, isn't it?
No, there is no memory corruption involved because stdout and stderr remain valid. Thanks, Florian
