[apachegh-11363] Use random temp directory for Java parser compilation

- Use random temp directory for each invocation to avoid conflicts
- Capture stderr from Java parser to debug output file
- Clean up temp directory after use
- This ensures complete isolation between different Maven invocations

Author: gnodet

apache-maven/src/assembly/maven/bin/mvn.cmd

@@ -184,19 +184,26 @@ if not exist "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadJvmConfig
 
 rem Use Java to parse jvm.config to avoid batch script parsing issues with special characters
 rem This handles pipes, quotes, and other special characters correctly
+rem Use random temp directory to avoid conflicts between different Maven versions
+set "JVM_CONFIG_PARSER_DIR=%TEMP%\mvn-jvm-parser-%RANDOM%-%RANDOM%"
+mkdir "%JVM_CONFIG_PARSER_DIR%"
 set "JVM_CONFIG_TEMP=%TEMP%\mvn-jvm-config-%RANDOM%.txt"
-"%JAVACMD%" "%MAVEN_HOME%\bin\JvmConfigParser.java" "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" "%MAVEN_PROJECTBASEDIR%" > "%JVM_CONFIG_TEMP%" 2>nul
+set "JVM_CONFIG_ERR=%TEMP%\mvn-jvm-config-err-%RANDOM%.txt"
+"%JAVACMD:java.exe=javac.exe%" -d "%JVM_CONFIG_PARSER_DIR%" "%MAVEN_HOME%\bin\JvmConfigParser.java" >nul 2>&1
+"%JAVACMD%" -cp "%JVM_CONFIG_PARSER_DIR%" JvmConfigParser "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" "%MAVEN_PROJECTBASEDIR%" > "%JVM_CONFIG_TEMP%" 2> "%JVM_CONFIG_ERR%"
 rem Read the single line from temp file
 set /p JVM_CONFIG_MAVEN_OPTS=<"%JVM_CONFIG_TEMP%"
-del "%JVM_CONFIG_TEMP%" 2>nul
-
-rem Debug output
-echo DEBUG: JVM_CONFIG_MAVEN_OPTS=%JVM_CONFIG_MAVEN_OPTS% >&2
-echo DEBUG: MAVEN_OPTS=%MAVEN_OPTS% >&2
 
 rem Debug output to file for IT verification
 echo JVM_CONFIG_MAVEN_OPTS=%JVM_CONFIG_MAVEN_OPTS% > "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
 echo MAVEN_OPTS=%MAVEN_OPTS% >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
+echo PARSER_STDERR: >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt"
+type "%JVM_CONFIG_ERR%" >> "%MAVEN_PROJECTBASEDIR%\mvn-debug.txt" 2>nul
+
+rem Cleanup temp files and directory
+del "%JVM_CONFIG_TEMP%" 2>nul
+del "%JVM_CONFIG_ERR%" 2>nul
+rmdir /s /q "%JVM_CONFIG_PARSER_DIR%" 2>nul
 
 :endReadJvmConfig