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Signed-off-by: Juan Cruz Viotti <[email protected]>

src/runtime/include/sourcemeta/jsonbinpack/runtime_decoder_basic.h

@@ -80,7 +80,7 @@ template <typename CharT, typename Traits> class BasicDecoder {
     result.reserve(length);
     std::uint64_t counter = 0;
     while (counter < length) {
-      result += this->get_byte();
+      result += static_cast<CharT>(this->get_byte());
       counter += 1;
     }