https://issues.apache.org/bugzilla/show_bug.cgi?id=56516
Bug ID: 56516
Summary: VariableInfo doesn't handle scope changes correctly
Product: Tomcat 7
Version: 7.0.53
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Jasper
Assignee: [email protected]
Reporter: [email protected]
Created attachment 31609
--> https://issues.apache.org/bugzilla/attachment.cgi?id=31609&action=edit
zip containing test case
Basically the problem is that when VariableInfo is returned from a
TagExtraInfo, the variable is declared once in the generated .java file and
never again. If any scope changes happen, like a try/catch, if/else etc etc,
the variable isn't declared in subsequent scopes, and it won't compile.
quick example, generates this:
try{
java.lang.String message = null;
// initialize tag
message = (java.lang.String) _jspx_page_context.findAttribute("message");
} catch(Exception e) {
// initialize tag
message = (java.lang.String) _jspx_page_context.findAttribute("message"); //
error here, message not declared in scope
}
should generate this:
try{
java.lang.String message = null;
// initialize tag
message = (java.lang.String) _jspx_page_context.findAttribute("message");
} catch(Exception e) {
java.lang.String message = null;
// initialize tag
message = (java.lang.String) _jspx_page_context.findAttribute("message");
}
I am attaching all files required for a test case as a single zip file:
./com/taglib/HelloTag.java - example tag
./com/taglib/HelloExtraInfo.java - example tag extra info
./hello.tld - example tld
./badtomcat.jsp - example jsp
./badtomcat_jsp.java - incorrect generated java code for example jsp
Let me know if you have any more questions.
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