From 3a1d4098cedb5d65592bb37969055aad249b2ba5 Mon Sep 17 00:00:00 2001
From: markt <markt@13f79535-47bb-0310-9956-ffa450edef68>
Date: Tue, 29 Jan 2008 23:14:23 +0000
Subject: [PATCH] Fix bug 43741. Tag files in JARs were getting compiled once
 for every JSP that used them. Patch provided by Anthony Berglas.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@616556 13f79535-47bb-0310-9956-ffa450edef68
---
 java/org/apache/jasper/JspCompilationContext.java | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/java/org/apache/jasper/JspCompilationContext.java b/java/org/apache/jasper/JspCompilationContext.java
index b98e6fe35..574105686 100644
--- a/java/org/apache/jasper/JspCompilationContext.java
+++ b/java/org/apache/jasper/JspCompilationContext.java
@@ -559,7 +559,15 @@ public class JspCompilationContext {
     
     public void compile() throws JasperException, FileNotFoundException {
         createCompiler();
-        if (isPackagedTagFile || jspCompiler.isOutDated()) {
+        boolean outDated;
+        if (isPackagedTagFile) {
+            // Tags in JARs only need to be compiled once
+            // If the JAR changes, the app needs to be re-loaded
+            outDated = !(new File(getClassFileName()).exists());
+        } else {
+            outDated = jspCompiler.isOutDated();
+        }
+        if (outDated) {
             try {
                 jspCompiler.removeGeneratedFiles();
                 jspLoader = null;
-- 
2.11.0