Suppress MSVC warning in unit test.

ofstd/include/dcmtk/ofstd/diag/unarymin.def

@@ -0,0 +1,4 @@
+// Clang and GCC don't seem to have such a warning
+#ifdef _MSC_VER
+#pragma warning(disable: 4146)
+#endif

ofstd/include/dcmtk/ofstd/ofdiag.h

@@ -1,6 +1,6 @@
 /*
  *
- *  Copyright (C) 2016-2023, OFFIS e.V.
+ *  Copyright (C) 2016-2024, OFFIS e.V.
  *  All rights reserved.  See COPYRIGHT file for details.
  *
  *  This software and supporting documentation were developed by
@@ -239,6 +239,13 @@
  */
 #define DCMTK_DIAGNOSTIC_IGNORE_ARRAY_BOUNDS <unspecified>
 
+/*! @brief A macro to disable warnings about the use of the unary minus
+ *  operator with an unsigned integer type
+ *  @note The macro may only be used in conjunction with <i>#include</i>!
+ *  @see DCMTK_DIAGNOSTIC_PUSH for an example.
+ */
+#define DCMTK_DIAGNOSTIC_IGNORE_UNSIGNED_UNARY_MINUS <unspecified>
+
 #else // DOXYGEN
 
 #define DCMTK_DIAGNOSTIC_PUSH "dcmtk/ofstd/diag/push.def"
@@ -266,6 +273,7 @@
 #define DCMTK_DIAGNOSTIC_IGNORE_RESTRICT "dcmtk/ofstd/diag/restrict.def"
 #define DCMTK_DIAGNOSTIC_IGNORE_USE_AFTER_FREE "dcmtk/ofstd/diag/useafree.def"
 #define DCMTK_DIAGNOSTIC_IGNORE_ARRAY_BOUNDS "dcmtk/ofstd/diag/arrybnds.def"
+#define DCMTK_DIAGNOSTIC_IGNORE_UNSIGNED_UNARY_MINUS "dcmtk/ofstd/diag/unarymin.def"
 
 // readable shorthands for compiler version checks
 #define DCMTK_DIAGNOSTIC_MIN_GCC_VERSION(MAJOR, MINOR, PATCH)\

ofstd/tests/tlimits.cc

@@ -30,14 +30,15 @@
 #include "dcmtk/ofstd/ofmath.h"   // for isinf and isnan
 
 // On some platforms, such as OpenIndiana, isinf is defined as a macro,
-// and that inteferes with the OFMath function of the same name.
+// and that interferes with the OFMath function of the same name.
 #ifdef isinf
 #undef isinf
 #endif
 
 #include DCMTK_DIAGNOSTIC_PUSH
 #include DCMTK_DIAGNOSTIC_IGNORE_OVERFLOW
 #include DCMTK_DIAGNOSTIC_IGNORE_IMPLICIT_CONVERSION
+#include DCMTK_DIAGNOSTIC_IGNORE_UNSIGNED_UNARY_MINUS
 template<typename T>
 static void checkMinMax()
 {