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Bug #1594

Cannot store an Async function call in a Task or Task(Of T) variable

Status
Fixed
Fixed in
v26.9.4
Area
compiler
Source discussion
https://forum.objo.dev/d/1200-xecution-stops-silently-after-await-inside-select-case-finally-not-run
Last updated
2026-09-28

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Public summary

Calling an Async function without Await and storing the resulting Task in a variable fails to compile. For example:

Var t1 As Task(Of DBAnswer) = client.GetRecordAsync()

fails with:

Cannot assign 'DBAnswer' to variable of type 'Task(Of DBAnswer)'.

Expected behaviour: calling an Async function yields its Task (or Task(Of T)), so it can be stored and awaited later — the documented "start now, await later" pattern. Await is what unwraps the result; the call itself must type as the task.

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