Claude
57a04dc393
Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01Gth99spB1CzQmBFofXmU4Z
15 lines
906 B
Bash
Executable File
15 lines
906 B
Bash
Executable File
#!/usr/bin/env bash
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# Which JVM options from Java 17-era startup scripts still work? Runs `java <flag> -version` on both JDKs; records exit code and first warning/error line.
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J17=${JDK17:-/tmp/tools/j17}; J25=${JDK25:-/tmp/tools/jdk-25.0.4.1+1}
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echo "# flag | JDK 17 | JDK 25 (exit code: first warning or error line)"
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for f in -Djava.security.manager=allow -XX:+UseBiasedLocking -XX:+UseConcMarkSweepGC -XX:+AggressiveOpts -XX:MaxPermSize=128m -XX:+UseParallelOldGC -Xverify:none -XX:-UseCompressedClassPointers -XX:+ParallelRefProcEnabled -XX:+UseStringDeduplication; do
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line="$f |"
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for j in "$J17" "$J25"; do
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all=$("$j/bin/java" $f -version 2>&1); rc=$?
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msg=$(echo "$all" | grep -E 'Unrecognized|warning|Error' | head -1 | sed 's/^OpenJDK 64-Bit Server VM warning: //' | cut -c1-120)
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[ -z "$msg" ] && msg="(no message)"
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line="$line exit $rc: $msg |"
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done
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echo "${line% |}"
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done
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