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RCORE:2259: Fix comparison function for ConditionType #8029

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merged 1 commit into from
Sep 20, 2024
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jedelbo
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@jedelbo jedelbo commented Sep 19, 2024

The function should ensure strict weak ordering. According to the current one
{1, 0} == {0, 1} and {0, 1} == {2, 1}
but
{1, 0} < {2, 1}

It is not possible to construct a failing test as the outcome very much depends on how the runtime types are laid out.

What, How & Why?

Fixes #8028

☑️ ToDos

  • 📝 Changelog update
  • 🚦 Tests (or not relevant)
  • C-API, if public C++ API changed
  • bindgen/spec.yml, if public C++ API changed

The function should ensure strict weak ordering. According to the current one
 {1, 0} == {0, 1} and {0, 1} == {2, 1}
but
 {1, 0} < {2, 1}

It is not possible to construct a failing test as the outcome very much depends
on how the runtime types are laid out.
@cla-bot cla-bot bot added the cla: yes label Sep 19, 2024
@jedelbo jedelbo requested review from nicola-cab and ironage and removed request for nicola-cab September 19, 2024 12:11
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Pull Request Test Coverage Report for Build jorgen.edelbo_429

Details

  • 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
  • 27 unchanged lines in 9 files lost coverage.
  • Overall coverage increased (+0.03%) to 91.112%

Files with Coverage Reduction New Missed Lines %
src/realm/sync/noinst/changeset_index.cpp 1 79.47%
test/test_util_network_ssl.cpp 1 89.59%
src/realm/mixed.cpp 2 86.46%
test/object-store/util/test_file.cpp 2 87.06%
test/test_lang_bind_helper.cpp 2 93.2%
src/realm/table.cpp 3 90.29%
src/realm/sync/noinst/client_impl_base.cpp 4 82.67%
src/realm/sync/noinst/protocol_codec.hpp 6 75.74%
test/fuzz_group.cpp 6 45.14%
Totals Coverage Status
Change from base Build 2612: 0.03%
Covered Lines: 217201
Relevant Lines: 238389

💛 - Coveralls

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@nicola-cab nicola-cab left a comment

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It's a pity that there is no way to test this. Because it seems so easy to get this wrong.

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@ironage ironage left a comment

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Good find! Thanks for the fix! 👍

@jedelbo jedelbo merged commit 78636fe into master Sep 20, 2024
46 of 49 checks passed
@jedelbo jedelbo deleted the je/RCORE-2259 branch September 20, 2024 07:43
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Crash on app startup in realm core code due to non-strict ordering comparator
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