C++ compilation error on CRAN r-devel-windows check

1 day ago 1

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The newest version of the backbone package (v3.0.3) on CRAN is generating this error during the automated checks on r-devel-windows-x86_64:

using C++ compiler: 'g++.exe (GCC) 14.3.0' make[1]: Entering directory '/d/temp/2025_12_11_01_50_00_29123/Rtmp0S4wJB/R.INSTALL3e5c542f717b/backbone/src' g++ -std=gnu++17 -I"D:/RCompile/recent/R/include" -DNDEBUG -I'D:/RCompile/CRANpkg/lib/4.6/Rcpp/include' -I"d:/rtools45/x86_64-w64-mingw32.static.posix/include" -pedantic -O2 -Wall -mfpmath=sse -msse2 -mstackrealign -c RcppExports.cpp -o RcppExports.o In file included from D:/RCompile/CRANpkg/lib/4.6/Rcpp/include/Rcpp.h:84, from RcppExports.cpp:4: D:/RCompile/CRANpkg/lib/4.6/Rcpp/include/Rcpp/Rmath.h: In function 'double R::rnbeta(double, double, double)': D:/RCompile/CRANpkg/lib/4.6/Rcpp/include/Rcpp/Rmath.h:163:100: error: '::Rf_rnbeta' has not been declared; did you mean 'Rf_rbeta'? 163 | inline double rnbeta(double a, double b, double np) { return ::Rf_rnbeta(a, b, np); } | ^~~~~~~~~ | Rf_rbeta make[1]: *** [D:/RCompile/recent/R/etc/x64/Makeconf:296: RcppExports.o] Error 1 make[1]: Leaving directory '/d/temp/2025_12_11_01_50_00_29123/Rtmp0S4wJB/R.INSTALL3e5c542f717b/backbone/src' ERROR: compilation failed for package 'backbone'

I have been unable to replicate the error on a windows platform using rhub, and the error does not occur during automated CRAN checks on any other platform (including r-release-windows-x86_64 and r-oldrel-windows-x86_64). Could this be a problem with the C++ compiler in CRAN's r-devel-windows installation? Any insight or suggestions are appreciated.