two fixes to the lint part: unsigned constant compares, and initializations in switch headers

lang/cem/cemcom/switch.c

@@ -21,6 +21,7 @@
 #include	"expr.h"
 #include	"type.h"
 #include	"noRoption.h"
+#include	"lint.h"
 
 extern char options[];
 
@@ -80,6 +81,9 @@ code_startswitch(expp)
 	sh->sh_lowerbd = sh->sh_upperbd = (arith)0;	/* immaterial ??? */
 	sh->sh_entries = (struct case_entry *) 0; /* case-entry list	*/
 	sh->sh_expr = *expp;
+#ifdef LINT
+	code_expr(sh->sh_expr, RVAL, TRUE, NO_LABEL, NO_LABEL);
+#endif
 	sh->next = switch_stack;	/* push onto switch-stack	*/
 	switch_stack = sh;
 	C_bra(l_table);			/* goto start of switch_table	*/
@@ -96,7 +100,9 @@ code_endswitch()
 	C_bra(sh->sh_break);		/* skip the switch table now	*/
 	C_df_ilb(sh->sh_table);		/* switch table entry		*/
 	/* evaluate the switch expr.	*/
+#ifndef LINT
 	code_expr(sh->sh_expr, RVAL, TRUE, NO_LABEL, NO_LABEL);
+#endif
 	tablabel = data_label();	/* the rom must have a label	*/
 	C_df_dlb(tablabel);
 	C_rom_ilb(sh->sh_default);