Fix JSON parser error found by fuzz

Jay Berkenbilt
1 parent f0fb19df
Showing 3 changed files with 4 additions and 2 deletions
fuzz/json_fuzzer_seed_corpus/f297bc5680b3730d3386caa8dee36bf5a853516b
fuzz/qtest/fuzz.test
libqpdf/JSON.cc
+"\,,,,,p,,-\,,,,
 \ No newline at end of file
@@ -16,7 +16,7 @@ my @fuzzers = (
     ['dct' => 1],
     ['flate' => 1],
     ['hex' => 1],
-    ['json' => 37],
+    ['json' => 38],
     ['lzw' => 2],
     ['pngpredictor' => 1],
     ['runlength' => 6],
@@ -1246,7 +1246,8 @@ JSONParser::handleToken()
         break;
  
     default:
-        throw std::logic_error("JSONParser::handleToken : non-terminal lexer state encountered");
+        throw std::runtime_error(
+            "JSON: offset " + std::to_string(offset) + ": premature end of input");
         break;
     }