The default behavior is that standard stream
stderr will
go to the CELQPIPI MSGRTN. You cannot use the
fopen() or
freopen() library
functions to open or reopen the CELQPIPI MSGRTN.
- Using fopen() to assign a stream to stderr directs stderr away
from the CELQPIPI MSGRTN.
- A call to freopen() with the null string ("") as the
filename string in an attempt to reopen the CELQPIPI MSGRTN using
a different mode will fail.
- Record format (RECFM) is always treated as undefined (U). Logical
record length (LRECL) is always treated as 255, which is the maximum
length defined by the write interface of the CELQPIPI MSGRTN file
system.