array_index does not catch std::invalid_argument exception from std::stoull

[StarryVae]

Description

array_index does not catch std::invalid_argument exception from std::stoull, which means we need catch the exception in our code when using nlohmann json.

for example, for a json body json_body: {\"foo\":\"val\",\"bar\":\"val\",\"array\":[\"a1\",\"a2\"]}, if json pointer json_pointer was set incorrectly like /array/, when we call json_body.contains(json_pointer), it will throw std::invalid_argument exception.

Reproduction steps

for a json body json_body: {\"foo\":\"val\",\"bar\":\"val\",\"array\":[\"a1\",\"a2\"]}, if json pointer json_pointer was set incorrectly like /array/, when we call json_body.contains(json_pointer), it will throw std::invalid_argument exception.

Expected vs. actual results

Expected:
catch nlohmann::detail::exception is enough.

Actual:
just catch nlohmann::detail::exception is not enough, crush will happen due to std::invalid_argument exception.

Minimal code example

No response

Error messages

No response

Compiler and operating system

clang 7.0.1 ubuntu 18.04

Library version

3.10.5

Validation

• The bug also occurs if the latest version from the develop branch is used.
• I can successfully compile and run the unit tests.

[falbrechtskirchinger]

This has been fixed (#3415).

v3.10.5

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoull

v3.11.2

terminate called after throwing an instance of 'nlohmann::json_abi_v3_11_2::detail::out_of_range'
  what():  [json.exception.out_of_range.404] unresolved reference token ''

[StarryVae]

This has been fixed (#3415).

v3.10.5

terminate called after throwing an instance of 'std::invalid_argument'
  what():  stoull

v3.11.2

terminate called after throwing an instance of 'nlohmann::json_abi_v3_11_2::detail::out_of_range'
  what():  [json.exception.out_of_range.404] unresolved reference token ''

thanks!