libbacktrace could not find executable to open

[ms609]

I'm running R4.1.2 with RBuildTools 4.0.

When I run

install.packages("Rcpp, type="source")

with a Makevars file containing
PKG_CXXFLAGS += -gdwarf-2 -g3 -fno-omit-frame-pointer

I see

* installing *source* package 'Rcpp' ...
** package 'Rcpp' successfully unpacked and MD5 sums checked
** using staged installation
** libs
"C:/RBuildTools/4.0/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include" -DNDEBUG -I../inst/include/       -gdwarf-2 -g3 -fno-omit-frame-pointer   -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c api.cpp -o api.o
"C:/RBuildTools/4.0/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include" -DNDEBUG -I../inst/include/       -gdwarf-2 -g3 -fno-omit-frame-pointer   -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c attributes.cpp -o attributes.o
"C:/RBuildTools/4.0/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include" -DNDEBUG -I../inst/include/       -gdwarf-2 -g3 -fno-omit-frame-pointer   -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c barrier.cpp -o barrier.o
"C:/RBuildTools/4.0/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include" -DNDEBUG -I../inst/include/       -gdwarf-2 -g3 -fno-omit-frame-pointer   -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c date.cpp -o date.o
"C:/RBuildTools/4.0/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-41~1.2/include" -DNDEBUG -I../inst/include/       -gdwarf-2 -g3 -fno-omit-frame-pointer   -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign  -c module.cpp -o module.o
during RTL pass: final
In file included from ../inst/include/Rcpp/Module.h:92,
                 from ../inst/include/Rcpp.h:69,
                 from module.cpp:24:
../inst/include/Rcpp/module/class_Base.h: In member function 'virtual SEXPREC* Rcpp::class_Base::invoke(SEXP, SEXP, SEXPREC**, int)':
../inst/include/Rcpp/module/class_Base.h:52:5: internal compiler error: in based_loc_descr, at dwarf2out.c:14318
     }
     ^
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://github.com/r-windows> for instructions.
make: *** [C:/PROGRA~1/R/R-41~1.2/etc/x64/Makeconf:245: module.o] Error 1
ERROR: compilation failed for package 'Rcpp'

Compilation is successful if I remove the -fno-omit-frame-pointer option.

I didn't see clear instructions for how to report this bug at https://github.com/r-windows, so apologies if this is the wrong place to report.