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Calls the System V IPC function msgrcv to receive a message from
message queue ID into variable VAR with a maximum message size of
SIZE. Note that when a message is received, the message type as a
native long integer will be the first thing in VAR, followed by the
actual message. This packing may be opened with unpack("l! a*")
.
Taints the variable. Returns true if successful, false
on error. See also SysV IPC in perlipc and the documentation for
IPC::SysV
and IPC::SysV::Msg
.
Portability issues: msgrcv in perlport.
