EL expressions that contain unnecessary parentheses fail -------------------------------------------------------- Key: WFLY-11481 URL: https://issues.redhat.com/browse/WFLY-11481 Project: WildFly Issue Type: Bug Reporter: Teresa Miyar Gil Assignee: Ricardo Martin Camarero Priority: Major Labels: el-expresion Attachments: helloworld.war EL with unnecessary parentheses fail. For instance: {code} <c:set var = "i" scope = "session" value = "1"/> <c:if test="${(i) == '1'}"> <p>i is: <c:out value = "${i}"/><p> </c:if> {code} The root exception clarified by byteman is: {code} 15:16:51,903 INFO [stdout] (http_8080 task-1) ----------------------->ParseException.init 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ParseException.<init>(ParseException.java:179) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.generateParseException(ELParser.java:2963) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.jj_consume_token(ELParser.java:2845) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.LambdaExpression(ELParser.java:295) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.Assignment(ELParser.java:226) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.SemiColon(ELParser.java:181) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.Expression(ELParser.java:174) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.DynamicExpression(ELParser.java:146) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.parser.ELParser.CompositeExpression(ELParser.java:43) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:182) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:237) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:295) 15:16:51,904 INFO [stdout] (http_8080 task-1) com.sun.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:112) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$JspAttribute.validateEL(Node.java:2151) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.getJspAttribute(Validator.java:1400) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1204) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:855) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1535) 15:16:51,904 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2427) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2433) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Root.accept(Node.java:464) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2375) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1834) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:218) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:354) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:334) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.compiler.Compiler.compile(Compiler.java:321) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:652) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403) 15:16:51,905 INFO [stdout] (http_8080 task-1) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347) 15:16:51,905 INFO [stdout] (http_8080 task-1) javax.servlet.http.HttpServlet.service(HttpServlet.java:790) {code} Parser seems confused as if there's a Lamda expression to resolve. Seems tomcat had a similar issue: https://bz.apache.org/bugzilla/show_bug.cgi?id=56179