Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
3	9	run_slot	call site: 00009	R_ParseVector

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           memchr

[call site] 00001


           fuzz_set_string

[function] [call site] 00002


             R_ToplevelExec

[call site] 00003


             fuzz_do_set_string

[function] [call site] 00004


               Rf_mkChar

[call site] 00005


               SET_STRING_ELT

[call site] 00006


           run_slot

[function] [call site] 00007


             R_ToplevelExec

[call site] 00008


             do_parse

[function] [call site] 00009


               R_ParseVector

[call site] 00010


               Rf_protect

[call site] 00011


               Rf_unprotect

[call site] 00012


             fuzz_eval_silent

[function] [call site] 00013


               R_tryEvalSilent

[call site] 00014