Add json fuzzer with seed files from #1123 and test suite

...as well as some cases generated in CI from earlier attempts at
fixing this.

1 files changed, 9 insertions, 0 deletions

diff --git a/fuzz/json_fuzzer_seed_corpus/c1c7640bbe478dba017714e48d03da870435557c b/fuzz/json_fuzzer_seed_corpus/c1c7640bbe478dba017714e48d03da870435557c
new file mode 100644
index 00000000..a5d6b485
--- /dev/null
+++ b/fuzz/json_fuzzer_seed_corpus/c1c7640bbe478dba017714e48d03da870435557c
@@ -0,0 +1,9 @@
+{
+  "qpdf": [
+    {
+      "jsonversion": 2,
+      "pdfversion": "1.3",
+      "maxobjectid": 6
+    }
+  ]
+}