jdk-24/test/hotspot/jtreg/runtime/CommandLine/CompilerConfigFileWarning.java

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/*
 * @test
 * @bug 7167142
 * @summary Warn if unused .hotspot_compiler file is present
 * @requires vm.flagless
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver CompilerConfigFileWarning
 */

import java.io.PrintWriter;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Platform;

public class CompilerConfigFileWarning {
    public static void main(String[] args) throws Exception {
        ProcessBuilder pb;
        OutputAnalyzer output;
        PrintWriter pw;

        pw = new PrintWriter("hs_comp.txt");
        pw.println("aaa, aaa");
        pw.close();

        pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompileCommandFile=hs_comp.txt", "-version");
        output = new OutputAnalyzer(pb.start());
        output.shouldHaveExitValue(1);
        output.shouldContain("An error occurred during parsing");
        output.shouldContain("Unrecognized option 'aaa'");
        output.shouldContain("aaa, aaa");

        // Skip on debug builds since we'll always read the file there
        if (!Platform.isDebugBuild()) {
            pw = new PrintWriter(".hotspot_compiler");
            pw.println("aa");
            pw.close();

            pb = ProcessTools.createLimitedTestJavaProcessBuilder("-version");
            output = new OutputAnalyzer(pb.start());
            output.shouldHaveExitValue(0);
            output.shouldContain("warning: .hotspot_compiler file is present but has been ignored.  Run with -XX:CompileCommandFile=.hotspot_compiler to load the file.");
        }
    }
}