Deeply nested JsonNode throws StackOverflowError for toString()

[deniz-husaj]

Describe the bug

After parsing a deeply nested JSON input stream to an ObjectMapper the returned JsonNode throws a StackOverflowError for toString().

Method threw 'java.lang.StackOverflowError' exception. Cannot evaluate com.fasterxml.jackson.databind.node.ObjectNode.toString()

Version information
2.13.2.2

To Reproduce

int depth = 50000;
StringBuilder jsonString = new StringBuilder();
jsonString.append("{");

for (int i=0; i < depth; i++) {
  jsonString.append(String.format("\"abc%s\": {", i));
}

for (int i=0; i < depth; i++) {
  jsonString.append("}");
}

jsonString.append("}");

InputStream inputStream = new ByteArrayInputStream(jsonString.toString().getBytes(Charsets.UTF_8));
ObjectMapper objectMapper = new ObjectMapper();
JsonNode jsonNode = objectMapper.readTree(inputStream); 
jsonNode.toString(); // throws StackOverflowError

[cowtowncoder]

Makes sense. Note that ObjectNode may also be just programmatically constructed, no need to parse per se.

Would be nice to change this specific serialization iterative (over recursion-based) if practical.

[cowtowncoder]

Hmmmh. Probably have to special case handling of actual ObjectNode and ArrayNode implementations (but delegate to everyone else). Probably doable, somewhat similar to non-recursive deserialization.

[cowtowncoder]

Implemented, will be in 2.14.0 release.