[tomcat] 02/02: Try and detect bugs like BZ 63778

[markt]

This is an automated email from the ASF dual-hosted git repository.

markt pushed a commit to branch 8.5.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git

commit 7c15360234d03ee308ee6c8fe42c5442e8be5e36
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Tue Oct 1 15:18:44 2019 +0100

    Try and detect bugs like BZ 63778
---
 java/org/apache/tomcat/util/compat/Jre8Compat.java | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/java/org/apache/tomcat/util/compat/Jre8Compat.java 
b/java/org/apache/tomcat/util/compat/Jre8Compat.java
index a29abcd..e76ac35 100644
--- a/java/org/apache/tomcat/util/compat/Jre8Compat.java
+++ b/java/org/apache/tomcat/util/compat/Jre8Compat.java
@@ -46,6 +46,9 @@ class Jre8Compat extends JreCompat {
         Method m1 = null;
         Constructor<?> c2 = null;
         try {
+            // Order is important for the error handling below.
+            // Must look up m1 first.
+
             // The class is Java6+...
             Class<?> clazz1 = Class.forName("javax.net.ssl.SSLParameters");
             // ...but this method is Java8+
@@ -56,8 +59,13 @@ class Jre8Compat extends JreCompat {
             // Should never happen
             log.error(sm.getString("jre8Compat.unexpected"), e);
         } catch (NoSuchMethodException e) {
-            // Must be pre-Java 8
-            log.debug(sm.getString("jre8Compat.javaPre8"), e);
+            if (m1 == null) {
+                // Must be pre-Java 8
+                log.debug(sm.getString("jre8Compat.javaPre8"), e);
+            } else {
+                // Should never happen - signature error in lookup?
+                log.error(sm.getString("jre8Compat.unexpected"), e);
+            }
         } catch (ClassNotFoundException e) {
             // Should never happen
             log.error(sm.getString("jre8Compat.unexpected"), e);


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