c-parse.in (string): With -Wtraditional, warn if ANSI string concatenation is utilized.

* c-parse.in (string): With -Wtraditional, warn if ANSI string
        concatenation is utilized.

        * invoke.texi (-Wtraditional): Document it.

From-SVN: r30863

gcc/ChangeLog

@@ -1,3 +1,10 @@
+1999-12-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* c-parse.in (string): With -Wtraditional, warn if ANSI string
+	concatenation is utilized.
+
+	* invoke.texi (-Wtraditional): Document it.
+
 1999-12-10  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* flow.c (flow_loops_dump): Avoid ANSI string concatenation.

gcc/c-parse.in

@@ -892,7 +892,12 @@ end ifobjc
 string:
 	  STRING
 	| string STRING
-		{ $$ = chainon ($1, $2); }
+		{ $$ = chainon ($1, $2);
+ifc
+		  if (warn_traditional)
+		    warning ("Use of ANSI string concatenation");
+end ifc
+		}
 	;
 
 ifobjc

gcc/c-parse.y

@@ -746,7 +746,10 @@ primary:
 string:
 	  STRING
 	| string STRING
-		{ $$ = chainon ($1, $2); }
+		{ $$ = chainon ($1, $2);
+		  if (warn_traditional)
+		    warning ("Use of ANSI string concatenation");
+		}
 	;
 
 

gcc/invoke.texi

@@ -1725,6 +1725,9 @@ The ANSI type of an integer constant has a different width or
 signedness from its traditional type.  This warning is only issued if
 the base of the constant is ten.  I.e. hexadecimal or octal values, which
 typically represent bit patterns, are not warned about.
+
+@item
+Usage of ANSI string concatenation is detected.
 @end itemize
 
 @item -Wundef

gcc/objc/objc-parse.y

@@ -859,7 +859,8 @@ primary:
 string:
 	  STRING
 	| string STRING
-		{ $$ = chainon ($1, $2); }
+		{ $$ = chainon ($1, $2);
+		}
 	;
 
 /* Produces an OBJC_STRING_CST with perhaps more OBJC_STRING_CSTs chained