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-rw-r--r--cpp/src/slice2swift/Gen.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpp/src/slice2swift/Gen.cpp b/cpp/src/slice2swift/Gen.cpp
index 4ced089cfe6..2215503dea9 100644
--- a/cpp/src/slice2swift/Gen.cpp
+++ b/cpp/src/slice2swift/Gen.cpp
@@ -857,7 +857,7 @@ Gen::TypesVisitor::visitDictionary(const DictionaryPtr& p)
const string optionalFormat = getUnqualified(getOptionalFormat(p), swiftModule);
const bool isVariableLength = p->keyType()->isVariableLength() || p->valueType()->isVariableLength();
- const int minWireSize = p->keyType()->minWireSize() + p->valueType()->minWireSize();
+ const size_t minWireSize = p->keyType()->minWireSize() + p->valueType()->minWireSize();
out << sp;
out << nl << "/// Helper class to read and write `" << fixIdent(name) << "` dictionary values from";