C++20 tests

DESCRIPTION

@@ -1,8 +1,8 @@
 Package: ranger
 Type: Package
 Title: A Fast Implementation of Random Forests
-Version: 0.17.1
-Date: 2025-06-04
+Version: 0.17.2
+Date: 2026-01-15
 Authors@R: c(
     person("Marvin N.", "Wright", email = "cran@wrig.de", role = c("aut", "cre")),
     person("Stefan", "Wager", role = "ctb"),
@@ -21,7 +21,7 @@ Suggests:
     survival,
     testthat
 Encoding: UTF-8
-RoxygenNote: 7.3.2
+RoxygenNote: 7.3.3
 URL: https://imbs-hl.github.io/ranger/,
     https://github.com/imbs-hl/ranger
 BugReports: https://github.com/imbs-hl/ranger/issues

NEWS.md

@@ -1,4 +1,7 @@
 
+# ranger 0.17.2
+* Fix compilation with C++20
+
 # ranger 0.17.1
 * Fix bug where missing value handling lead to negative impurity importance values
 * Slightly change the missing value algorithm (see docs)

cpp_version/src/version.h

@@ -1,3 +1,3 @@
 #ifndef RANGER_VERSION
-#define RANGER_VERSION "0.17.1"
+#define RANGER_VERSION "0.17.2"
 #endif

src/Makevars

@@ -1,2 +1,3 @@
 PKG_CPPFLAGS = -DR_BUILD
-
+CXX_STD = CXX20
+PKG_CXXFLAGS = -std=c++20

src/Makevars.win

@@ -1,2 +1,3 @@
 PKG_CPPFLAGS = -DR_BUILD -DWIN_R_BUILD
-
+CXX_STD = CXX20
+PKG_CXXFLAGS = -std=c++20

src/utility.h

@@ -12,6 +12,10 @@
 #ifndef UTILITY_H_
 #define UTILITY_H_
 
+#ifdef R_BUILD
+#include <Rcpp.h>
+#endif
+
 #include <math.h>
 #include <vector>
 #include <iostream>
@@ -25,10 +29,6 @@
 #include <type_traits> 
 #include <utility> 
 
-#ifdef R_BUILD
-#include <Rinternals.h>
-#endif
-
 #include "globals.h"
 #include "Data.h"