diff --git a/io/misc.cpp b/io/misc.cpp
index 61f9cdd..25114d5 100644
--- a/io/misc.cpp
+++ b/io/misc.cpp
@@ -37,7 +37,14 @@ std::string readFile(std::string_view path, std::string_view::size_type maxSize)
     }
     res.reserve(size);
     file.seekg(ios_base::beg);
+    // ignore warning about null pointer dereference from GCC 12 for now (which is *likely* not correct)
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wnull-dereference"
+#endif
     res.assign((istreambuf_iterator<char>(file)), istreambuf_iterator<char>());
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
     return res;
 }
 
diff --git a/tests/iotests.cpp b/tests/iotests.cpp
index d3f4919..3da0587 100644
--- a/tests/iotests.cpp
+++ b/tests/iotests.cpp
@@ -446,7 +446,14 @@ void IoTests::testAdvancedIniFile()
     std::string originalContents;
     inputFile.clear();
     inputFile.seekg(std::ios_base::beg);
+    // ignore warning about null pointer dereference from GCC 12 for now (which is *likely* not correct)
+#ifdef __GNUC__
+#pragma GCC diagnostic ignored "-Wnull-dereference"
+#endif
     originalContents.assign((istreambuf_iterator<char>(inputFile)), istreambuf_iterator<char>());
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif
     CPPUNIT_ASSERT_EQUAL(originalContents, newFile.str());
 }