Better error message for user when corrupt wallet unlock fails

src/qt/askpassphrasedialog.cpp

@@ -152,14 +152,15 @@ void AskPassphraseDialog::accept()
         }
         } break;
     case Unlock:
-        if(!model->setWalletLocked(false, oldpass))
-        {
-            QMessageBox::critical(this, tr("Wallet unlock failed"),
-                                  tr("The passphrase entered for the wallet decryption was incorrect."));
-        }
-        else
-        {
-            QDialog::accept(); // Success
+        try {
+            if (!model->setWalletLocked(false, oldpass)) {
+                QMessageBox::critical(this, tr("Wallet unlock failed"),
+                                      tr("The passphrase entered for the wallet decryption was incorrect."));
+            } else {
+                QDialog::accept(); // Success
+            }
+        } catch (const std::runtime_error& e) {
+            QMessageBox::critical(this, tr("Wallet unlock failed"), e.what());
         }
         break;
     case Decrypt:

src/wallet/crypter.cpp

@@ -202,7 +202,7 @@ bool CCryptoKeyStore::Unlock(const CKeyingMaterial& vMasterKeyIn)
         if (keyPass && keyFail)
         {
             LogPrintf("The wallet is probably corrupted: Some keys decrypt but not all.\n");
-            assert(false);
+            throw std::runtime_error("Error unlocking wallet: some keys decrypt but not all. Your wallet file may be corrupt.");
         }
         if (keyFail || !keyPass)
             return false;