Package check result: NOTE

Check: dependencies in R code, Result: NOTE
  refstr.c:79:29: runtime error: member access within null pointer of type 'refstr_t' (aka 'struct refstr_t')
      #0 0x7fbcd9a367b9 in agstrdup /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/graph/refstr.c:79:29
      #1 0x7fbcd9a1fe6c in agNEWgraph /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/graph/graph.c:243:15
      #2 0x7fbcd9a1f360 in agopen /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/graph/graph.c:291:9
      #3 0x7fbcd9a16aa4 in initproto /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/graph/attribs.c:183:22
      #4 0x7fbcd9a16aa4 in aginitlib /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/graph/attribs.c:332:2
      #5 0x7fbcd98a6547 in gvContextPlugins /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/graphviz/lib/gvc/gvc.c:61:5
      #6 0x7fbcd961a6f6 in Rgraphviz_init /home/hornik/tmp/scratch/RtmpkYedp1/R.INSTALLe90394c5fa5de/Rgraphviz/src/init.c:29:11
      #7 0x7fbcf9d4825a in R_doDotCall /home/hornik/src/R/src/main/dotcode.c:751:11
      #8 0x7fbcf9da15c2 in do_dotcall /home/hornik/src/R/src/main/dotcode.c:1437:11
      #9 0x7fbcf9ef3409 in bcEval_loop /home/hornik/src/R/src/main/eval.c:8122:14
      #10 0x7fbcf9ea7a64 in bcEval /home/hornik/src/R/src/main/eval.c:7505:16
      #11 0x7fbcf9ea619f in Rf_eval /home/hornik/src/R/src/main/eval.c:1167:8
      #12 0x7fbcf9eb08f5 in R_execClosure /home/hornik/src/R/src/main/eval.c:2393:22
      #13 0x7fbcf9eac3ec in applyClosure_core /home/hornik/src/R/src/main/eval.c:2306:16
      #14 0x7fbcf9ea6b1f in Rf_applyClosure /home/hornik/src/R/src/main/eval.c:2328:16
      #15 0x7fbcf9ea6b1f in Rf_eval /home/hornik/src/R/src/main/eval.c:1280:12
      #16 0x7fbcf9fea4f7 in Rf_ReplIteration /home/hornik/src/R/src/main/main.c:265:2
      #17 0x7fbcf9fed310 in R_ReplConsole /home/hornik/src/R/src/main/main.c:317:11
      #18 0x7fbcf9fed134 in run_Rmainloop /home/hornik/src/R/src/main/main.c:1219:5
      #19 0x7fbcf9fed3da in Rf_mainloop /home/hornik/src/R/src/main/main.c:1226:5
      #20 0x559b18676dd4 in main /home/hornik/src/R/src/main/Rmain.c:29:5
      #21 0x7fbcf914dd67 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
      #22 0x7fbcf914de24 in __libc_start_main csu/../csu/libc-start.c:360:3
      #23 0x559b18593370 in _start (/home/hornik/tmp/R-d-clang-xtra/bin/exec/R+0x2b370) (BuildId: 38e1ee5ef6bdb9bd5de3520a8e141c0ea669cab3)
  
  SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior refstr.c:79:29

Post-processing issues found:

File: 00check.log
refstr.c:79:29: runtime error: member access within null pointer of type 'refstr_t' (aka 'struct refstr_t')