duplicateKey injects a duplicate object key, turning {"k":1} into {"k":1,"k":1}. This exercises duplicate-key handling: the parser should return the f

The reason for using *[]byte rather than []byte in parameters is an optimization. As of Go 1.6, the compiler cannot perfectly inline the function whe

Benchmark harness support for STK-REQ-004.

injectInvalidUTF8 inserts a raw invalid-UTF-8 byte sequence inside a JSON string value. Targets the parser's UTF-8 validation path: the parser must re

injectLoneSurrogate corrupts a string by replacing a `\uXXXX` escape with a lone surrogate escape (\uD800 / \uDC00 alone, or a high-high pair). Target

injectMismatchedCloser swaps a closing '}' for ']' (or vice versa). The grammar generator always pairs '{' with '}' and '[' with ']'; this operator pr

injectUnbalancedOpen inserts unmatched '{' or '[' opens at a random position. This produces structures the grammar generator CANNOT emit: every genera

Test helper for SYS-REQ-006.

truncateAtValueBoundary cuts the document right after a ':' (before the value starts). This is the OSS-Fuzz 4649128545288192 / sentinel_value_boundary

truncateMidElement cuts inside an array element, after a '[' or ','. The truncated_mid_element class: the parser must not read past the cut when scann

truncateMidEscape cuts inside a \uXXXX escape sequence. This is the truncated_escape_sequence class: the parser's Unescape routine must detect the tru

truncateMidKey cuts inside a string key. The cut is placed between the opening '"' of a key and its closing '"'. This is the truncated_mid_key class:

truncateMidStructure cuts after an unclosed '{' or '['. This is the truncated_mid_structure class: the parser must detect the missing closing token an