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Specify the size of the experimental feature array in a more robust way

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See doc comment for details.
This commit is contained in:
John Ericson 2023-11-04 15:57:43 -04:00
parent c14ba93290
commit d854e8696b
1 changed files with 13 additions and 1 deletions
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14
src/libutil/experimental-features.cc
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@ -12,7 +12,19 @@ struct ExperimentalFeatureDetails
std::string_view description;
};
constexpr std::array<ExperimentalFeatureDetails, 16> xpFeatureDetails = {{
/**
* If two different PRs both add an experimental feature, and we just
* used a number for this, we *woudln't* get merge conflict and the
* counter will be incremented once instead of twice, causing a build
* failure.
*
* By instead defining this instead as 1 + the bottom experimental
* feature, we either have no issue at all if few features are not added
* at the end of the list, or a proper merge conflict if they are.
*/
constexpr size_t numXpFeatures = 1 + static_cast<size_t>(Xp::VerifiedFetches);
constexpr std::array<ExperimentalFeatureDetails, numXpFeatures> xpFeatureDetails = {{
{
.tag = Xp::CaDerivations,
.name = "ca-derivations",