BadNativeStackInErrorHandlingTest.java

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import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.regex.Pattern;

import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;

/*
 * @test
 * @bug 8194652
 * @summary Printing native stack shows an "error occurred during error reporting".
 * @modules java.base/jdk.internal.misc
 * @requires vm.debug
 * @requires vm.flavor != "zero"
 * @library /test/lib
 * @run driver BadNativeStackInErrorHandlingTest
 */

// This test was adapted from SafeFetchInErrorHandlingTest.java.
public class BadNativeStackInErrorHandlingTest {
  public static void main(String[] args) throws Exception {
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
        "-XX:+UnlockDiagnosticVMOptions",
        "-Xmx100M",
        "-XX:ErrorHandlerTest=14",
        "-XX:-CreateCoredumpOnCrash",
        "-version");

    OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());

    // we should have crashed with a SIGSEGV
    output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
    output_detail.shouldMatch("# +(?:SIGSEGV|SIGBUS|EXCEPTION_ACCESS_VIOLATION).*");

    // extract hs-err file
    String hs_err_file = output_detail.firstMatch("# *(\\S*hs_err_pid\\d+\\.log)", 1);
    if (hs_err_file == null) {
        throw new RuntimeException("Did not find hs-err file in output.\n");
    }

    File f = new File(hs_err_file);
    if (!f.exists()) {
        throw new RuntimeException("hs-err file missing at " +
                                   f.getAbsolutePath() + ".\n");
    }

    System.out.println("Found hs_err file. Scanning...");

    FileInputStream fis = new FileInputStream(f);
    BufferedReader br = new BufferedReader(new InputStreamReader(fis));
    String line = null;

    // The failing line looks like this:
    // [error occurred during error reporting (printing native stack), id 0xb]
    Pattern pattern =
        Pattern.compile("\\[error occurred during error reporting \\(printing native stack\\), id .*\\]");

    String lastLine = null;
    while ((line = br.readLine()) != null) {
        if (pattern.matcher(line).matches()) {
            System.out.println("Found: " + line + ".");
            throw new RuntimeException("hs-err file should not contain: '" +
                                       pattern + "'");
        }
        lastLine = line;
    }
    br.close();

    if (!lastLine.equals("END.")) {
        throw new RuntimeException("hs-err file incomplete (missing END marker.)");
    } else {
        System.out.println("End marker found.");
    }

    System.out.println("OK.");
  }
}