Call tree
LLVMFuzzerTestOneInput /src/r-oss-fuzz/harnesses/dcf.c linenumber=-1
  memchr  linenumber=47
  fuzz_set_string /src/r-oss-fuzz/harnesses/common.h linenumber=53
    R_ToplevelExec  linenumber=205
    fuzz_do_set_string /src/r-oss-fuzz/harnesses/common.h linenumber=205
      Rf_mkChar  linenumber=199
      SET_STRING_ELT  linenumber=199
  fuzz_eval_silent /src/r-oss-fuzz/harnesses/common.h linenumber=56
    R_tryEvalSilent  linenumber=179
====================================