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Fix JSON parser error found by fuzz

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This commit is contained in:
Jay Berkenbilt 2024-02-04 17:27:43 -05:00
parent f0fb19df9d
commit 7ae095fa09
3 changed files with 4 additions and 2 deletions
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1
fuzz/json_fuzzer_seed_corpus/f297bc5680b3730d3386caa8dee36bf5a853516b Normal file
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@ -0,0 +1 @@
"\,,,,,p,,-\,,,,

2
fuzz/qtest/fuzz.test
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@ -16,7 +16,7 @@ my @fuzzers = (
['dct' => 1], ['dct' => 1],
['flate' => 1], ['flate' => 1],
['hex' => 1], ['hex' => 1],
['json' => 37], ['json' => 38],
['lzw' => 2], ['lzw' => 2],
['pngpredictor' => 1], ['pngpredictor' => 1],
['runlength' => 6], ['runlength' => 6],

3
libqpdf/JSON.cc
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@ -1246,7 +1246,8 @@ JSONParser::handleToken()
break; break;
default: 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; break;
} }