Function genDeepNesting

encoding_json_fuzz_test.go:139–151

genDeepNesting returns deeply-nested JSON array bytes. When closed is true the structure is complete ([[[...1...]]]); when false it is left unclosed ([[[..., which is the more dangerous stack-overflow shape because the parser must descend before discovering the missing closers.

(depth int, closed bool)

// ([[[..., which is the more dangerous stack-overflow shape because the
// parser must descend before discovering the missing closers.
func genDeepNesting(depth int, closed bool) []byte {
	buf := make([]byte, 0, depth*2+1)
	for i := 0; i < depth; i++ {
		buf = append(buf, '[')
	}
	if closed {
		buf = append(buf, '1')
		for i := 0; i < depth; i++ {
			buf = append(buf, ']')
		}
	}
	return buf
}

// =============================================================================
// Gate A: NO-PANIC (embedded in every gate via encodingJSONNoPanic)