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-rw-r--r--Eigen/src/Core/util/Meta.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 01a9647a3..7ecd59add 100644
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -27,9 +27,11 @@ namespace internal {
* we however don't want to add a dependency to Boost.
*/
-#if EIGEN_COMP_ICC
-typedef intptr_t IntPtr;
-typedef uintptr_t UIntPtr;
+// Only recent versions of ICC complain about using ptrdiff_t to hold pointers,
+// and older versions do not provide *intptr_t types.
+#if EIGEN_COMP_ICC>=1600
+typedef std::intptr_t IntPtr;
+typedef std::uintptr_t UIntPtr;
#else
typedef std::ptrdiff_t IntPtr;
typedef std::size_t UIntPtr;