(unary_expr): Warn about overflows in parser-built unary expressions.

From-SVN: r3403

(unary_expr): Warn about overflows in parser-built unary expressions.
From-SVN: r3403
5303129f · Richard Stallman · 90374cc2 · 5303129f
Commit 5303129f authored Feb 02, 1993 by Richard Stallman
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gcc/c-parse.in
+2 -1

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--- a/gcc/c-parse.in
+++ b/gcc/c-parse.in
@@ -395,7 +395,8 @@ unary_expr:
 		{ $$ = $3;
 		  pedantic = $<itype>1; }
 	| unop cast_expr  %prec UNARY
-		{ $$ = build_unary_op ($1, $2, 0); }
+		{ $$ = build_unary_op ($1, $2, 0);
+		  overflow_warning ($$); }
 	/* Refer to the address of a label as a pointer.  */
 	| ANDAND identifier
 		{ tree label = lookup_label ($2);