Fuzz introspector: geohash_import_fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 _setjmp [call site] 00001
1 decode_geohash_bbox [function] [call site] 00002
2 strlen [call site] 00003
2 tolower [call site] 00004
2 strchr [call site] 00005
2 lwerror [function] [call site] 00006
1 postgis_lwgeom_fuzzer_cleanup_allocations() [function] [call site] 00007