TESTING: legacy_test_real13.json parsing failed.

Hi!

I'm using latest jsoncpp from master, on a Windows 10 dev box with Visual Studio 2019

Build has been configured with CMake :

cmake -B ~/build/cpp/www-git/jsoncpp -D CMAKE_CONFIGURATION_TYPES=Release \
-D CMAKE_INSTALL_PREFIX=~/build/cpp/www-git/jsoncpp/install -D BUILD_SHARED_LIBS=ON -D JSONCPP_WITH_TESTS=ON \
-D JSONCPP_WITH_POST_BUILD_UNITTEST=ON -D JSONCPP_WITH_EXAMPLE=ON

Everything builds fine, but one test (only one of all tests) in jsoncpp_readerwriter_tests fails :

Excerpts from the output log of "Build Solution" in VS 2019 :

18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_11.json"
18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_12.json"
18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_13.json"
18>Failed to parse input file:
18>* Line 1, Column 2
18>  '-1e+9999' is not a number.
18>
18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_01.json"
18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_02.json"
18>C:\Users\olivier\build\cpp\www-git\jsoncpp\bin\Release\jsontestrunner_exe.exe  --json-writer StyledWriter "C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_03.json"

18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\fail_invalid_quote.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\fail_test_array_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\fail_test_array_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\fail_test_object_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\fail_test_stack_limit.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_06.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_array_07.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_06.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_07.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_08.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_basic_09.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_comment_00.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_comment_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_comment_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_complex_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_06_64bits.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_07_64bits.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_integer_08_64bits.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_large_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_object_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_object_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_object_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_object_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_preserve_comment_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_06.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_07.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_08.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_09.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_10.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_11.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_12.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_13.json parsing failed
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_unicode_01.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_unicode_02.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_unicode_03.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_unicode_04.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_string_unicode_05.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\test_array_08.json OK
18>TESTING: C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\test_object_05.json OK
18>
18>Failure details:
18>* Test C:\Users\olivier\dev\cpp\www-git\jsoncpp\test\data\legacy_test_real_13.json
18>Parsing failed:
18>
18>
18>Test results: 63 passed, 1 failed.

Not sure what's going on here...

Shouldn't '-1e+9999' be a 'number' as expected by the test ?

Open test/data/legacy_test_real_13.json and compare it with the neighboring legacy_test_real files. Reproduce the failure by running the CMake-configured jsoncpp_readerwriter_tests or jsontestrunner_exe under Visual Studio, then inspect the reported handling of '-1e+9999'. Done means the fixture parses as intended and the complete test suite reports no failure.