R Under development (unstable) (2026-02-27 r89490) -- "Unsuffered Consequences"
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> # This file is part of the standard setup for testthat.
> # It is recommended that you do not modify it.
> #
> # Where should you do additional test configuration?
> # Learn more about the roles of various files in:
> # * https://r-pkgs.org/testing-design.html#sec-tests-files-overview
> # * https://testthat.r-lib.org/articles/special-files.html
> 
> library(testthat)
> library(fastkmedoids)
> 
> test_check("fastkmedoids")
pam.cpp:625:51: runtime error: left shift of negative value -1
    #0 0x7fb4e6944322 in FastPAM::assignToNearestCluster(std::vector<int, std::allocator<int>>&) /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/pam.cpp:625:51
    #1 0x7fb4e69411f4 in FastPAM::run(std::vector<int, std::allocator<int>>&, int) /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/pam.cpp:445:17
    #2 0x7fb4e69401d4 in PAM::run() /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/pam.cpp:285:19
    #3 0x7fb4e6953bf3 in FastPAM::run() /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/./pam.h:296:40
    #4 0x7fb4e6953bf3 in fastpam(Rcpp::Vector<14, Rcpp::PreserveStorage>, int, int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>, double, int) /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/rcpp_fastkmedoids.cpp:106:21
    #5 0x7fb4e693300c in _fastkmedoids_fastpam /data/gannet/ripley/R/packages/tests-clang-UBSAN/fastkmedoids/src/RcppExports.cpp:40:34
    #6 0x559307a3077b in R_doDotCall (/data/gannet/ripley/R/R-clang/bin/exec/R+0x9077b)
    #7 0x559307a78ed7 in bcEval_loop eval.c
    #8 0x559307a6702b in bcEval eval.c
    #9 0x559307a667b4 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67b4)
    #10 0x559307a7e848 in R_execClosure eval.c
    #11 0x559307a7dd4b in applyClosure_core eval.c
    #12 0x559307a66c05 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6c05)
    #13 0x559307a83d77 in do_set (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe3d77)
    #14 0x559307a669df in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc69df)
    #15 0x559307a82eba in do_begin (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe2eba)
    #16 0x559307a669df in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc69df)
    #17 0x559307a851e7 in do_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe51e7)
    #18 0x559307a6dca3 in bcEval_loop eval.c
    #19 0x559307a6702b in bcEval eval.c
    #20 0x559307a667b4 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67b4)
    #21 0x559307a7e848 in R_execClosure eval.c
    #22 0x559307a7dd4b in applyClosure_core eval.c
    #23 0x559307a66c05 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6c05)
    #24 0x559307a855c7 in do_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe55c7)
    #25 0x559307a6dca3 in bcEval_loop eval.c
    #26 0x559307a6702b in bcEval eval.c
    #27 0x559307a667b4 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67b4)
    #28 0x559307a7e848 in R_execClosure eval.c
    #29 0x559307a7dd4b in applyClosure_core eval.c
    #30 0x559307a81204 in R_forceAndCall (/data/gannet/ripley/R/R-clang/bin/exec/R+0xe1204)
    #31 0x5593079b57eb in do_lapply (/data/gannet/ripley/R/R-clang/bin/exec/R+0x157eb)
    #32 0x559307ac8737 in do_internal (/data/gannet/ripley/R/R-clang/bin/exec/R+0x128737)
    #33 0x559307a6df05 in bcEval_loop eval.c
    #34 0x559307a6702b in bcEval eval.c
    #35 0x559307a667b4 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc67b4)
    #36 0x559307a7e848 in R_execClosure eval.c
    #37 0x559307a7dd4b in applyClosure_core eval.c
    #38 0x559307a66c05 in Rf_eval (/data/gannet/ripley/R/R-clang/bin/exec/R+0xc6c05)
    #39 0x559307ab3687 in Rf_ReplIteration (/data/gannet/ripley/R/R-clang/bin/exec/R+0x113687)
    #40 0x559307ab518e in run_Rmainloop (/data/gannet/ripley/R/R-clang/bin/exec/R+0x11518e)
    #41 0x559307ab51fa in Rf_mainloop (/data/gannet/ripley/R/R-clang/bin/exec/R+0x1151fa)
    #42 0x5593079a1db7 in main (/data/gannet/ripley/R/R-clang/bin/exec/R+0x1db7)
    #43 0x7fb4f74115f4 in __libc_start_call_main (/lib64/libc.so.6+0x35f4) (BuildId: a1dda014206b55b07f58fe8db80121b752dc3d03)
    #44 0x7fb4f74116a7 in __libc_start_main@GLIBC_2.2.5 (/lib64/libc.so.6+0x36a7) (BuildId: a1dda014206b55b07f58fe8db80121b752dc3d03)
    #45 0x5593079a1cd4 in _start (/data/gannet/ripley/R/R-clang/bin/exec/R+0x1cd4)

SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior pam.cpp:625:51 
[ FAIL 0 | WARN 0 | SKIP 0 | PASS 53 ]
> 
> proc.time()
   user  system elapsed 
  2.250   0.244   9.620