From: Luke Dashjr Date: Sun, 15 Apr 2012 01:00:27 +0000 (-0400) Subject: Bugfix: Check that QRcode_encodeString didn't return NULL (error) X-Git-Tag: v0.4.0-unstable~129^2~1^2~18^2~21 X-Git-Url: https://git.novaco.in/?p=novacoin.git;a=commitdiff_plain;h=b557c17a37fc05ae8905d2ab310a1ad0d53834c0 Bugfix: Check that QRcode_encodeString didn't return NULL (error) Without this, any error will segfault Bitcoin-Qt --- diff --git a/src/qt/qrcodedialog.cpp b/src/qt/qrcodedialog.cpp index 9cf50b0..567cfa7 100644 --- a/src/qt/qrcodedialog.cpp +++ b/src/qt/qrcodedialog.cpp @@ -38,12 +38,16 @@ void QRCodeDialog::genCode() { QString uri = getURI(); //qDebug() << "Encoding:" << uri.toUtf8().constData(); - QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1); - if (code) + { ui->lblQRCode->setText(""); QRcode *code = QRcode_encodeString(uri.toUtf8().constData(), 0, QR_ECLEVEL_L, QR_MODE_8, 1); + if (!code) + { + ui->lblQRCode->setText(tr("Error encoding URI into QR Code.")); + return; + } myImage = QImage(code->width + 8, code->width + 8, QImage::Format_RGB32); myImage.fill(0xffffff); unsigned char *p = code->data; @@ -58,8 +62,6 @@ void QRCodeDialog::genCode() QRcode_free(code); ui->lblQRCode->setPixmap(QPixmap::fromImage(myImage).scaled(300, 300)); } - else - ui->lblQRCode->setText(tr("Error encoding URI into QR Code; try to reduce the text for label / message.")); } QString QRCodeDialog::getURI()