diff --git a/src/main/native/cpp/support/raw_istream.cpp b/src/main/native/cpp/support/raw_istream.cpp
index 382ed835b3..39e1738841 100644
--- a/src/main/native/cpp/support/raw_istream.cpp
+++ b/src/main/native/cpp/support/raw_istream.cpp
@@ -48,6 +48,9 @@ llvm::StringRef raw_istream::getline(llvm::SmallVectorImpl<char>& buf,
   return llvm::StringRef{buf.data(), buf.size()};
 }
 
+raw_mem_istream::raw_mem_istream(llvm::StringRef mem)
+    : raw_mem_istream(mem.data(), mem.size()) {}
+
 void raw_mem_istream::close() {}
 
 std::size_t raw_mem_istream::in_avail() const { return m_left; }
diff --git a/src/main/native/include/support/raw_istream.h b/src/main/native/include/support/raw_istream.h
index 3c2d18e40a..924911ce1c 100644
--- a/src/main/native/include/support/raw_istream.h
+++ b/src/main/native/include/support/raw_istream.h
@@ -80,6 +80,7 @@ class raw_istream {
 
 class raw_mem_istream : public raw_istream {
  public:
+  raw_mem_istream(llvm::StringRef mem);
   raw_mem_istream(const char* mem, std::size_t len) : m_cur(mem), m_left(len) {}
   void close() override;
   std::size_t in_avail() const override;