coreutils 5.2.1 -> 5.93 regression: With nohup getlogin() returns NULL

[Tobias Burnus]

Transferred from:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31299

If one runs the following program:
-----------------------
#include <stdio.h>
#include <unistd.h>
int main()
{
  printf("%s\n", (NULL == getlogin())?"no":getlogin());
  return 0;
}
-------------------------
via "/usr/bin/nohup a.out", nohup.out contains "no" with coreutils 5.93
or 6.8 but using coreutils 5.2.1's nohup it contains the login name.
Calling the program in the shell or via tcsh's nohup prints also the
login name.

Tobias