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From "Sudhir (JIRA)" <>
Subject [jira] [Created] (FLEX-33155) Uncaught exception in compiler, when used with JRE 1.7
Date Wed, 01 Aug 2012 08:49:34 GMT
Sudhir created FLEX-33155:

             Summary: Uncaught exception in compiler, when used with JRE 1.7
                 Key: FLEX-33155
             Project: Apache Flex
          Issue Type: Bug
          Components: Compiler API
    Affects Versions: Apache Flex 4.8 (parity release)
         Environment: JRE version 1.7.0_05 , FlashBuilder 4.6 , Apache Flex 4.8(parity release)
            Reporter: Sudhir
            Priority: Minor

Steps to Reproduce:
1. Download the Apache SDK using AIR tool (available at
) which also packages the SDK to use with Flash builder.
2. Download JRE 1.7
3. Install Flash Builder 4.6
4. Go to the installed FB location and delete the JRE folder already present in the FB installed
5. Copy the JRE 1.7 folder into the installed location. (jre folder should be renamed from
jre7 to jre)
FB will now use JRE 1.7 instead of using the bundled 1.6
6. Configure FB to use Apache SDK which was downloaded in step 1. 
7. Create a Flex project using Apache SDK
8. Now create a new AS class inside the new project 

Actual result: Internal build error in problems view. The error log says that there was an
uncaught exception in the compiler. 

Expected result: There should be no such errors

Workaround: Add a line "-Djava.util.Arrays.useLegacyMergeSort=true" in the FlashBuilder.ini

Note: This issue is specific to Apache SDK. It is working fine with the released version of
Flex SDK 4.6

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