Ignore %l in , bug983.

Changes

@@ -15,6 +15,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 ****  Add VerilatedScopeNameMap for introspection, bug966. [Todd Strader]
 
+****  Ignore %l in $display, bug983. [Todd Strader]
+
 ****  Fix very long module names, bug937. [Todd Strader]
 
 ****  Fix internal error on dotted refs into generates, bug958. [Jie Xu]

src/V3Const.cpp

@@ -1846,6 +1846,7 @@ private:
 		    switch (tolower(ch)) {
 		    case '%': break;  // %% - just output a %
 		    case 'm': break;  // %m - auto insert "name"
+		    case 'l': break;  // %m - auto insert "library"
 		    default:  // Most operators, just move to next argument
 			if (argp) {
 			    AstNode* nextp=argp->nextp();

src/V3EmitC.cpp

@@ -1358,9 +1358,13 @@ void EmitCStmts::displayNode(AstNode* nodep, AstScopeName* scopenamep,
 		emitDispState.pushFormat(suffix);
 		break;
 	    }
+	    case 'l': {
+                // Better than not compiling
+		emitDispState.pushFormat("----");
+		break;
+	    }
 	    case 'u':
 	    case 'z':
-	    case 'l':
 	    case 'v':
 		nodep->v3error("Unsupported: $display-like format code: %"<<pos[0]);
 		break;

src/V3LinkResolve.cpp

@@ -273,6 +273,9 @@ private:
 		case 'm':  // %m - auto insert "name"
 		    if (isScan) nodep->v3error("Unsupported: %m in $fscanf");
 		    break;
+		case 'l':  // %l - auto insert "library"
+		    if (isScan) nodep->v3error("Unsupported: %l in $fscanf");
+		    break;
 		default:  // Most operators, just move to next argument
 		    if (!V3Number::displayedFmtLegal(ch)) {
 			nodep->v3error("Unknown $display-like format code: %"<<ch);

src/V3Width.cpp

@@ -1908,6 +1908,7 @@ private:
 		switch (tolower(ch)) {
 		case '%': break;  // %% - just output a %
 		case 'm': break;  // %m - auto insert "name"
+		case 'l': break;  // %m - auto insert "library"
 		case 'd': {  // Convert decimal to either 'd' or 'u'
 		    if (argp && argp->isSigned()) { // Convert it
 			ch = '~';

test_regress/t/t_display_l.pl

@@ -0,0 +1,18 @@
+#!/usr/bin/perl
+if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
+# DESCRIPTION: Verilator: Verilog Test driver/expect definition
+#
+# Copyright 2003 by Wilson Snyder. This program is free software; you can
+# redistribute it and/or modify it under the terms of either the GNU
+# Lesser General Public License Version 3 or the Perl Artistic License
+# Version 2.0.
+
+compile (
+    );
+
+execute (
+    check_finished=>1,
+    );
+
+ok(1);
+1;

test_regress/t/t_display_l.v

@@ -0,0 +1,15 @@
+// DESCRIPTION: Verilator: $display() test for %l
+//
+// This file ONLY is placed into the Public Domain, for any use,
+// without warranty, 2015 by Todd Strader.
+
+module t (/*AUTOARG*/);
+
+   initial begin
+      assert (0 == 0) else $fatal(2, "%l %m : %d", 0);
+      $display("%l %m");
+      $write("*-* All Finished *-*\n");
+      $finish;
+   end
+
+endmodule