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Add a fuzzer for json_document

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fuzzer-parse_json_view.cpp checks for every input that
json_document::accept agrees with json::accept, that an accepted input
materializes to the value json::parse returns, and that a rejected input
makes both throw the same exception with the same message. It is built
like the other fuzzers (tests/Makefile, and the root Makefile's
fuzz_testing_json_view target, which starts from the JSON test corpus) and
listed in tests/fuzzing.md.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-30 20:58:31 +02:00
parent ad73c78923
commit 2f7d2548e1
4 changed files with 120 additions and 1 deletions
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Makefile
+9
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@@ -42,6 +42,7 @@ all:
@echo "fuzz_testing_bon8 - prepare fuzz testing of the BON8 parser"
@echo "fuzz_testing_bson - prepare fuzz testing of the BSON parser"
@echo "fuzz_testing_cbor - prepare fuzz testing of the CBOR parser"
@echo "fuzz_testing_json_view - prepare fuzz testing of the json_document/json_view parser"
@echo "fuzz_testing_msgpack - prepare fuzz testing of the MessagePack parser"
@echo "fuzz_testing_ubjson - prepare fuzz testing of the UBJSON parser"
@echo "pretty - beautify code with Artistic Style"
@@ -99,6 +100,14 @@ fuzz_testing_cbor:
find tests/data -size -5k -name *.cbor | xargs -I{} cp "{}" fuzz-testing/testcases
@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
fuzz_testing_json_view:
rm -fr fuzz-testing
mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out
$(MAKE) parse_json_view_fuzzer -C tests CXX=afl-clang++
mv tests/parse_json_view_fuzzer fuzz-testing/fuzzer
find tests/data/json_tests -size -5k -name *json | xargs -I{} cp "{}" fuzz-testing/testcases
@echo "Execute: afl-fuzz -i fuzz-testing/testcases -o fuzz-testing/out fuzz-testing/fuzzer"
fuzz_testing_msgpack:
rm -fr fuzz-testing
mkdir -p fuzz-testing fuzz-testing/testcases fuzz-testing/out