chrono-test failing on i386 and armhf on Ubuntu

[trldp]

When building libfmt on Ubuntu, the test chrono-test.timestamps gives the following errors

3: [ RUN      ] chrono_test.timestamps_ratios
3: unknown file: Failure
3: C++ exception with description "cannot format duration" thrown in the test body.
3: [  FAILED  ] chrono_test.timestamps_ratios (0 ms)

The failure occurs on different versions of Ubuntu. Full build logs from for instance 22.04 (the latest LTS release) can be found here

• i386: https://launchpadlibrarian.net/705397090/buildlog_ubuntu-jammy-i386.fmtlib_9.1.0-1~git202312241939+5~ubuntu22.04.1_BUILDING.txt.gz
• armhf: https://launchpadlibrarian.net/705399663/buildlog_ubuntu-jammy-armhf.fmtlib_9.1.0-1~git202312241939+5~ubuntu22.04.1_BUILDING.txt.gz

[vitaut]

The log mentions version 9.1. Do you still get an error on the current version of the library?

[trldp]

The source should be a copy of the latest git version (master branch). The version number is set manually in the accompanying debian branch (see https://code.launchpad.net/~trldp/+git/libfmt-debian, I've updated it now), and should not have an influence on the build itself.

[vitaut]

Godbolt repro: https://www.godbolt.org/z/1Pfd7T51d. Looks related to #3727.

[vitaut]

The problem is likely due to long being 32-bit on these platforms (and nonportable test).

[vitaut]

Fixed in be57ec7. Thanks for reporting.