Skip to content

Return null start for empty vectors #1462

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Enchufa2 wants to merge 2 commits into
base: master
Choose a base branch
from
+9 −1
Open

Return null start for empty vectors #1462

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
6cab64d
Return null start for empty vectors
Enchufa2 Mar 26, 2026
52d415b
Merge branch 'master' into fix/1461
eddelbuettel Mar 27, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 5 additions & 0 deletions ChangeLog
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
2026-03-26 Iñaki Ucar <iucar@fedoraproject.org>

* inst/include/Rcpp/internal/r_vector.h: Return null start for empty vectors
instead of an invalid pointer, which causes UB in e.g. std::copy

2026-03-26 Dirk Eddelbuettel <edd@debian.org>

* inst/bib/Rcpp.bib: Refreshed a few more references
Expand Down
5 changes: 4 additions & 1 deletion inst/include/Rcpp/internal/r_vector.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,8 @@
//
// r_vector.h: Rcpp R/C++ interface class library -- information about R vectors
//
// Copyright (C) 2010 - 2017 Dirk Eddelbuettel and Romain Francois
// Copyright (C) 2010 - 2025 Dirk Eddelbuettel and Romain François
// Copyright (C) 2026 Dirk Eddelbuettel, Romain François and Iñaki Ucar
//
// This file is part of Rcpp.
//
Expand Down Expand Up @@ -36,6 +37,8 @@ typename Rcpp::traits::storage_type<RTYPE>::type* r_vector_start(SEXP x) {
#define RCPP_VECTOR_START_IMPL(__RTYPE__, __ACCESSOR__) \
template <> \
inline typename Rcpp::traits::storage_type<__RTYPE__>::type* r_vector_start<__RTYPE__>(SEXP x) { \
if (Rf_xlength(x) == 0) \
return NULL; \
return __ACCESSOR__(x); \
}

Expand Down
Loading