How can I find EXC_BAD_ACCESS root cause?

[terlan98]

I'm trying to create a PDF signing demo using iText. My code depends on org.bouncycastle, which I have also force-linked in robovm.xml. I use the following command to create an Xcode framework from my Java code: mvn -Drobovm.enableBitcode=true compile robovm:install

Screenshot of the error:

I'll include the imports from my code to give you an idea of what I'm using:

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.Provider;
import java.security.Security;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Arrays;

import com.itextpdf.kernel.geom.Rectangle;

import com.itextpdf.signatures.PdfSigner;
import com.itextpdf.signatures.IExternalSignature;
import com.itextpdf.signatures.DigestAlgorithms;
import com.itextpdf.signatures.IExternalDigest;
import com.itextpdf.signatures.PrivateKeySignature;
import com.itextpdf.signatures.BouncyCastleDigest;

import org.bouncycastle.jce.provider.BouncyCastleProvider;

import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.StampingProperties;
import org.apache.commons.codec.binary.Base64;

import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.canvas.parser.PdfTextExtractor;

The implementation of the extractTextFrom() function:

public static String extractTextFrom(String base64Pdf) {
        try {
            // Decode Base64 to byte array
            byte[] decodedBytes = Base64.decodeBase64(base64Pdf.getBytes());

            // Read the PDF from byte array
            PdfReader reader = new PdfReader(new ByteArrayInputStream(decodedBytes));
            PdfDocument pdfDoc = new PdfDocument(reader);

            StringBuilder text = new StringBuilder();

            // Extract text from each page
            for (int page = 1; page <= pdfDoc.getNumberOfPages(); page++) {
                text.append(PdfTextExtractor.getTextFromPage(pdfDoc.getPage(page))).append("\n");
            }

            pdfDoc.close();
            reader.close();

            return text.toString();
        } catch (IOException e) {
            e.printStackTrace();
            return "Error: " + e.getMessage();
        }
    }

My robovm.xml file:

<config>
    <os>ios</os>
    <arch>arm64</arch>
    <arch>thumbv7</arch>
    <!--<arch>x86</arch>-->
    <!--<arch>x86_64</arch>-->
    <target>framework</target>
    <imageName>${framework.name}</imageName>
    <infoPList>Info.plist.xml</infoPList>
    <treeShaker>aggressive</treeShaker>
    <forceLinkClasses>
        <pattern>java.io.ByteArrayInputStream</pattern>
        <pattern>java.io.ByteArrayOutputStream</pattern>
        <pattern>java.io.IOException</pattern>
        <pattern>java.security.KeyFactory</pattern>
        <pattern>java.security.PrivateKey</pattern>
        <pattern>java.security.Provider</pattern>
        <pattern>java.security.Security</pattern>
        <pattern>java.security.cert.CertificateFactory</pattern>
        <pattern>java.security.cert.X509Certificate</pattern>
        <pattern>java.security.spec.PKCS8EncodedKeySpec</pattern>

        <pattern>org.robovm.samples.myjavaframework.**</pattern>

        <pattern>com.itextpdf.signatures.PdfSigner</pattern>
        <pattern>com.itextpdf.signatures.IExternalSignature</pattern>
        <pattern>com.itextpdf.signatures.DigestAlgorithms</pattern>
        <pattern>com.itextpdf.signatures.IExternalDigest</pattern>
        <pattern>com.itextpdf.signatures.PrivateKeySignature</pattern>
        <pattern>com.itextpdf.signatures.BouncyCastleDigest</pattern>

        <pattern>org.bouncycastle.jce.provider.BouncyCastleProvider</pattern>
        <pattern>org.bouncycastle.**</pattern>
        <pattern>java.util.logging.**</pattern>
    </forceLinkClasses>
    <exportedSymbols>
        <symbol>JNI_CreateJavaVM</symbol>
    </exportedSymbols>
</config>

[dkimitsa]

hi,
forcing linkage with following should fix it:

com.android.org.conscrypt.OpenSSLProvider
com.android.org.conscrypt.OpenSSLRandom

[terlan98]

🎉 Thanks @dkimitsa, it fixed the crash but now I've got a java exception. I'll mark this discussion as answered and create a new one for that.