fixed some bugs, changed warning interface

lang/cem/cemcom.ansi/domacro.c

@@ -25,6 +25,7 @@
 #include	"class.h"
 #include	"macro.h"
 
+extern char options[];
 extern	char **inctable;	/* list of include directories		*/
 extern	char *getwdir();
 char ifstack[IFDEPTH];	/* if-stack: the content of an entry is	*/
@@ -211,7 +212,8 @@ int to_endif;
 			++(ifstack[nestlevel]);
 			if (!to_endif && nestlevel == skiplevel) {
 				if (SkipToNewLine())
-					strict("garbage following #else");
+					if (!options['o'])
+						strict("garbage following #else");
 				NoUnstack--;
 				return;
 			}
@@ -221,7 +223,8 @@ int to_endif;
 			ASSERT(nestlevel > nestlow);
 			if (nestlevel == skiplevel) {
 				if (SkipToNewLine())
-					strict("garbage following #endif");
+					if (!options['o'])
+						strict("garbage following #endif");
 				nestlevel--;
 				NoUnstack--;
 				return;
@@ -364,7 +367,8 @@ do_elif()
 do_else()
 {
 	if (SkipToNewLine())
-		strict("garbage following #else");
+		if (!options['o'])
+			strict("garbage following #else");
 	if (nestlevel <= nestlow)
 		lexerror("#else without corresponding #if");
 	else {	/* mark this level as else-d */
@@ -379,7 +383,8 @@ do_else()
 do_endif()
 {
 	if (SkipToNewLine())
-		strict("garbage following #endif");
+		if (!options['o'])
+			strict("garbage following #endif");
 	if (nestlevel <= nestlow)	{
 		lexerror("#endif without corresponding #if");
 	}

lang/cem/cemcom.ansi/expr.c

@@ -138,8 +138,9 @@ idf2expr(expr)
 	if (def == 0)	{
 		if (AHEAD == '(') {
 			/* function call, declare name IMPLICITly (3.3.2.2) */
-			warning("implicit declaration of function %s"
-				, idf->id_text);
+			if (!options['o'])
+				warning("implicit declaration of function %s"
+					, idf->id_text);
 			add_def(idf, IMPLICIT, funint_type, level);
 		} else	{
 			if (!is_anon_idf(idf))

lang/cem/cemcom.ansi/idf.c

@@ -591,10 +591,13 @@ check_formals(idf, dc)
 
 	while (du && du->du_fund != FUNCTION)
 		du = du->next;
-	ASSERT(du);
+	if (!du) return;	/* terrible error, signalled earlier */
+
 	if (du->du_proto) return;
 
-	warning("'%s' old-fashioned function definition", dc->dc_idf->id_text);
+	if (!options['o'])
+		warning("'%s' old-fashioned function definition"
+				, dc->dc_idf->id_text);
 
 	if (pl) {
 		if (pl->pl_flag & PL_ELLIPSIS) {

lang/cem/cemcom.ansi/options.c

@@ -68,8 +68,13 @@ next_option:			/* to allow combined one-char options */
 	case 'n':			/* use no registers */
 	case 'w':			/* no warnings will be given */
 	case 's':			/* no stricts will be given */
+	case 'o':			/* no complaints about old-style */
 		options[opt] = 1;
 		goto next_option;
+	case 'a':		/* suppress all but errors diagnostics */
+		options['w'] = 1;	/* implies -a */
+		options['s'] = 1;
+		goto next_option;
 #endif	LINT
 
 #ifdef	LINT

lang/cem/cemcom.ansi/proto.c

@@ -335,7 +335,7 @@ struct type *tp;
 	while((*tgpp) && (*tgpp)->tg_type != tp) {
 		tgpp = &((*tgpp)->next);
 	}
-	ASSERT(*tgpp);
+	if (!*tgpp) return;
 
 	tgp = *tgpp;
 	if (tgp->tg_level > L_PROTO) return;