Reading a std::array<Long64_t, 1> from a TFile created on linux does not work on macOS

[ktf]

To reproduce, download http://ccdb-test.cern.ch:8080/download/d64bd450-1619-11ec-a9d5-200114580202 and open it in TBrowser. Works on ubuntu, but on mac I get:

root [2] Error in <TBufferFile::ReadVersion>: Could not find the StreamerInfo with a checksum of 0xdc6299b4 for the class "array<Long64_t,1>" in /Users/ktf/Downloads/array<Long64_t,1>_1631706076679.root.
Error in <TBufferFile::CheckByteCount>: object of class array<Long64_t,1> read too few bytes: 6 instead of 14

when clicking on ccdb_object;1.

Both ROOT 6.24.02 and 6.24.06 seem to be affected.

[ktf]

Notice that using a std::vector in place of a std::array works as expected.

[pcanal]

Does the reading work properly on the same platform (both no warning and the correct value)? What is the array value for the example provided?

[ktf]

yes. Reading it back on linux works just fine.

[ktf]

The actual value should be some timestamp around 1630659771715.

[pcanal]

:) ok. That's what I get, that looked like a random stream :) .. well not quite the same but similar (1631706076551146), I assume it is a different file

[ktf]

yeah, I cannot check the actual value right now, but it looks correct.