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[SR-10430] Need a way to know which image on disk a class is from #3453

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millenomi opened this issue Apr 9, 2019 · 3 comments
Open

[SR-10430] Need a way to know which image on disk a class is from #3453

millenomi opened this issue Apr 9, 2019 · 3 comments
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@millenomi
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Previous ID SR-10430
Radar None
Original Reporter @millenomi
Type Bug
Additional Detail from JIRA
Votes 0
Component/s Foundation
Labels Bug
Assignee None
Priority Medium

md5: 8f9632f47485f4d3f6d48cdb3e059964

blocks:

  • SR-10361 Parity: Bundle.init(for: AnyClass)

Issue Description:

To correct some of Bundle's swift-corelibs-foundation shortcomings, it would be useful to have a way to know, given an **AnyClass, which image on disk it is from.
@belkadan
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belkadan commented Apr 9, 2019

dladdr will do this, although IIRC it's not very efficient about it.

@millenomi
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This has two parts: getting an appropriate symbol for the class that is known to originate in the image, and then using it. The first bit requires some stdlib support.

@belkadan
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belkadan commented Apr 9, 2019

Ah, gotcha. The appropriate symbol is the "nominal type descriptor", but the stdlib doesn't provide an easy way to get at that.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 5, 2022
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@millenomi @belkadan