Call tree
LLVMFuzzerTestOneInput /src/hwloc_fuzzer.c linenumber=-1
  hwloc_encode_to_base64 /src/hwloc/hwloc/base64.c linenumber=22
  hwloc_decode_from_base64 /src/hwloc/hwloc/base64.c linenumber=31
    __ctype_b_loc  linenumber=206
    strchr  linenumber=212
    __ctype_b_loc  linenumber=280
    __ctype_b_loc  linenumber=295
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