diff --git a/src/zxing/zxing/oned/rss/RSS14Reader.cpp b/src/zxing/zxing/oned/rss/RSS14Reader.cpp
index b08f289..14562c6 100644
--- a/src/zxing/zxing/oned/rss/RSS14Reader.cpp
+++ b/src/zxing/zxing/oned/rss/RSS14Reader.cpp
@@ -151,7 +151,7 @@ Pair RSS14Reader::decodePair(Ref<BitArray> row, bool right, int rowNumber, Decod
                     outside.getChecksumPortion() + 4 * inside.getChecksumPortion(),
                     pattern);
 
-    } catch (NotFoundException ignored) {
+    } catch (NotFoundException const& /*e*/) {
         return Pair();
     }
 }
diff --git a/src/zxing/zxing/oned/rss/expanded/RSSExpandedReader.cpp b/src/zxing/zxing/oned/rss/expanded/RSSExpandedReader.cpp
index fe1acbd..5d190a2 100644
--- a/src/zxing/zxing/oned/rss/expanded/RSSExpandedReader.cpp
+++ b/src/zxing/zxing/oned/rss/expanded/RSSExpandedReader.cpp
@@ -87,7 +87,7 @@ Ref<Result> RSSExpandedReader::decodeRow(int rowNumber, Ref<BitArray> row, Decod
     m_startFromEven = false;
     try {
         return constructResult(decodeRow2pairs(rowNumber, row));
-    } catch (NotFoundException e) {
+    } catch (NotFoundException const& /*e*/) {
         // OK
     }
 
@@ -108,7 +108,7 @@ std::vector<ExpandedPair> RSSExpandedReader::decodeRow2pairs(int rowNumber, Ref<
     while (!done) {
         try {
             m_pairs.push_back(retrieveNextPair(row, m_pairs, rowNumber));
-        } catch (NotFoundException nfe) {
+        } catch (NotFoundException const& nfe) {
             if (m_pairs.size() == 0) {
                 throw nfe;
             }
@@ -158,7 +158,7 @@ std::vector<ExpandedPair> RSSExpandedReader::checkRows(bool reverse)
     std::vector<ExpandedPair> ps;
     try {
         ps = checkRows({}, 0);
-    } catch (NotFoundException e) {
+    } catch (NotFoundException const& /*e*/) {
         // OK
     }
 
@@ -194,7 +194,7 @@ std::vector<ExpandedPair> RSSExpandedReader::checkRows(std::vector<ExpandedRow>
             try {
                 // Recursion: try to add more rows
                 return checkRows(rs, static_cast<int>(i + 1));
-            } catch (NotFoundException e) {
+            } catch (NotFoundException const& /*e*/) {
                 // We failed, try the next candidate
             }
         }
@@ -417,7 +417,7 @@ ExpandedPair RSSExpandedReader::retrieveNextPair(Ref<BitArray> row, std::vector<
     DataCharacter rightChar;
     try {
         rightChar = decodeDataCharacter(row, pattern, isOddPattern, false);
-    } catch (NotFoundException ignored) {
+    } catch (NotFoundException const& /*e*/) {
         //rightChar = nullptr;
     }
     return ExpandedPair(leftChar, rightChar, pattern);
@@ -535,7 +535,7 @@ FinderPattern RSSExpandedReader::parseFoundFinderPattern(Ref<BitArray> row, int
     int value;
     try {
         value = parseFinderValue(counters, FINDER_PATTERNS);
-    } catch (NotFoundException ignored) {
+    } catch (NotFoundException const& /*e*/) {
         return FinderPattern();
     }
     return FinderPattern(value, {start, end}, start, end, rowNumber);
diff --git a/src/zxing/zxing/oned/rss/expanded/decoders/GeneralAppIdDecoder.cpp b/src/zxing/zxing/oned/rss/expanded/decoders/GeneralAppIdDecoder.cpp
index e2d6750..a4cce47 100644
--- a/src/zxing/zxing/oned/rss/expanded/decoders/GeneralAppIdDecoder.cpp
+++ b/src/zxing/zxing/oned/rss/expanded/decoders/GeneralAppIdDecoder.cpp
@@ -394,7 +394,7 @@ DecodedChar GeneralAppIdDecoder::decodeAlphanumeric(int pos)
         c = '/';
         break;
     default:
-        throw new IllegalStateException("Decoding invalid alphanumeric value: " + sixBitValue);
+        throw IllegalStateException("Decoding invalid alphanumeric value: " + sixBitValue);
     }
     return DecodedChar(pos + 6, c);
 }