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Fix capturing uses of NonCapturingLazyInitializer #23881

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1 commit merged into from
Jan 15, 2021
Merged

Fix capturing uses of NonCapturingLazyInitializer #23881

1 commit merged into from
Jan 15, 2021

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roji
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@roji roji commented Jan 14, 2021

  • Fixed several cases where our initialization was capturing (so spurious memory allocations). Added C# 9 static everywhere to reduce the risk of this happening again.
  • Fixed one case where a nullable value was being lazily generated, defeating the initialization mechanism (because NonCapturingLazyInitializer compares to null to see if a value has been generated). This meant every invocation would re-generate again and again. Discovered during NRT annotations - doing this won't compile any more after that's done.

@roji roji requested a review from a team January 14, 2021 17:41
@roji roji force-pushed the EvilInitializers branch 2 times, most recently from ab42198 to 9f3fb63 Compare January 14, 2021 18:08
@@ -93,7 +93,7 @@ public CustomShaperCompilingExpressionVisitor(bool tracking)
{
if (entity is TIncludingEntity includingEntity)
{
var collectionAccessor = navigation.GetCollectionAccessor();
var collectionAccessor = navigation.GetCollectionAccessor()!;
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@AndriySvyryd @smitpatel note the bang here. For navigations and skip navigations, ClrCollectionAccessorFactory().Create() returns null when the property isn't a collection or is a shadow property. I guess this would be about implementing shadow navigations?

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We could also throw for these cases as they're not supported etc.

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ghost commented Jan 15, 2021

Hello @roji!

Because this pull request has the auto-merge label, I will be glad to assist with helping to merge this pull request once all check-in policies pass.

p.s. you can customize the way I help with merging this pull request, such as holding this pull request until a specific person approves. Simply @mention me (@msftbot) and give me an instruction to get started! Learn more here.

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ghost commented Jan 15, 2021

Apologies, while this PR appears ready to be merged, I've been configured to only merge when all checks have explicitly passed. The following integrations have not reported any progress on their checks and are blocking auto-merge:

  1. Azure Pipelines

These integrations are possibly never going to report a check, and unblocking auto-merge likely requires a human being to update my configuration to exempt these integrations from requiring a passing check.

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@ghost ghost merged commit 6d97708 into main Jan 15, 2021
@ghost ghost deleted the EvilInitializers branch January 15, 2021 10:31
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2 participants