Merge pull request #1205 from RcppCore/bugfix/untag_token

Untag token upon removal from the precious list

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,13 @@
+2022-03-14  Dirk Eddelbuettel  <edd@debian.org>
+
+	* DESCRIPTION (Version, Date): Roll minor version
+	* inst/include/Rcpp/config.h: Idem
+
+2022-03-13  Iñaki Ucar  <iucar@fedoraproject.org>
+
+	* src/barrier.cpp: Untag tokens upon removal from the precious list,
+	so that the internal reference counter can be safely decremented by R
+
 2022-03-13  Dirk Eddelbuettel  <edd@debian.org>
 
 	* DESCRIPTION (Version, Date): Roll minor version

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: Rcpp
 Title: Seamless R and C++ Integration
-Version: 1.0.8.3
-Date: 2022-03-13
+Version: 1.0.8.4
+Date: 2022-03-14
 Author: Dirk Eddelbuettel, Romain Francois, JJ Allaire, Kevin Ushey, Qiang Kou,
  Nathan Russell, Inaki Ucar, Douglas Bates and John Chambers
 Maintainer: Dirk Eddelbuettel <edd@debian.org>

inst/NEWS.Rd

@@ -3,7 +3,7 @@
 \newcommand{\ghpr}{\href{https://github.com/RcppCore/Rcpp/pull/#1}{##1}}
 \newcommand{\ghit}{\href{https://github.com/RcppCore/Rcpp/issues/#1}{##1}}
 
-\section{Changes in Rcpp hotfix release version 1.0.8.3 (2022-03-13)}{
+\section{Changes in Rcpp hotfix release version 1.0.8.4 (2022-03-14)}{
   \itemize{
     \item Changes in Rcpp API:
     \itemize{
@@ -13,6 +13,8 @@
        \code{std::unary_function} and \code{std::binary_function} with
        \code{std::function} (Dirk in \ghpr{1202} fixing \ghit{1201} and
        CRAN request)
+       \code Upon removal from precious list, the tag is set to null
+       (Iñaki in \ghpr{1205} fixing \ghit{1203})
     }
     \item Changes in Rcpp Documentation:
     \itemize{

inst/include/Rcpp/config.h

@@ -30,7 +30,7 @@
 #define RCPP_VERSION_STRING     "1.0.8"
 
 // the current source snapshot (using four components, if a fifth is used in DESCRIPTION we ignore it)
-#define RCPP_DEV_VERSION        RcppDevVersion(1,0,8,3)
-#define RCPP_DEV_VERSION_STRING "1.0.8.3"
+#define RCPP_DEV_VERSION        RcppDevVersion(1,0,8,4)
+#define RCPP_DEV_VERSION_STRING "1.0.8.4"
 
 #endif

src/barrier.cpp

@@ -2,7 +2,7 @@
 // barrier.cpp: Rcpp R/C++ interface class library -- write barrier
 //
 // Copyright (C) 2010 - 2020  Dirk Eddelbuettel and Romain Francois
-// Copyright (C) 2021         Dirk Eddelbuettel, Romain Francois and Iñaki Ucar
+// Copyright (C) 2021 - 2022  Dirk Eddelbuettel, Romain Francois and Iñaki Ucar
 //
 // This file is part of Rcpp.
 //
@@ -119,6 +119,7 @@ void Rcpp_precious_remove(SEXP token) {
     if (token == R_NilValue || TYPEOF(token) != LISTSXP) {
         return;
     }
+    SET_TAG(token, R_NilValue);
     SEXP before = CAR(token);
     SEXP after = CDR(token);
     SETCDR(before, after);

tests/tinytest.R

@@ -9,7 +9,7 @@ if (requireNamespace("tinytest", quietly=TRUE)) {
 
     ## Force tests to be executed if in dev release which we define as
     ## having a sub-release, eg 0.9.15.5 is one whereas 0.9.16 is not
-    if (FALSE && length(strsplit(packageDescription("Rcpp")$Version, "\\.")[[1]]) > 3) {	# dev rel, and
+    if (length(strsplit(packageDescription("Rcpp")$Version, "\\.")[[1]]) > 3) {	# dev rel, and
         if (Sys.getenv("RunAllRcppTests") != "no") { 			# if env.var not yet set
             message("Setting \"RunAllRcppTests\"=\"yes\" for development release\n")
             Sys.setenv("RunAllRcppTests"="yes")