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10080 smatch Makefile changes for usr/src/cmd

@@ -20,10 +20,11 @@
 #
 #
 # Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 PROG=   zonecfg
 OBJS=   zonecfg.o zonecfg_lex.o zonecfg_grammar.tab.o
 
 include ../Makefile.cmd

@@ -44,10 +45,12 @@
 CERRWARN +=     -_gcc=-Wno-uninitialized
 CERRWARN +=     -_gcc=-Wno-unused-label
 CERRWARN +=     -_gcc=-Wno-unused-variable
 CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
 
+SMOFF += all_func_returns
+
 CLOBBERFILES += $(PROG).ln
 
 .KEEP_STATE:
 
 all: $(PROG)