Call tree
LLVMFuzzerTestOneInput /src/r-oss-fuzz/harnesses/scan.c linenumber=-1
  memchr  linenumber=87
  fuzz_set_string /src/r-oss-fuzz/harnesses/common.h linenumber=93
    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=96
    R_tryEvalSilent  linenumber=179
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