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10079 smatch Makefile changes for usr/src/lib

@@ -20,10 +20,11 @@
 #
 #
 # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 LIBRARY =               libipp-core.a
 VERS =                  .0
 OBJECTS = ipp.o ipp_types.o read.o strings.o write.o
 

@@ -44,10 +45,12 @@
 
 CERRWARN +=     -_gcc=-Wno-unused-variable
 CERRWARN +=     -_gcc=-Wno-char-subscripts
 CERRWARN +=     -_gcc=-Wno-switch
 
+SMOFF += all_func_returns
+
 MAPFILES =      $(SRCDIR)/mapfile
 
 LDLIBS +=       -lpapi-common -lc
 
 .KEEP_STATE: