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https://github.com/tinygo-org/tinygo.git
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Jake Bailey
eed4afda63
Emit fault checkpoints around compiler-generated runtime assertions so runtimePanicAt can unwind through the existing defer/recover machinery instead of aborting. This lets panics from bounds checks, type checks, and other compiler-inserted runtime checks be recovered by deferred functions. Mark functions that call recover as noinline. Inlining such a function into a deferred closure can make recover observe the wrong call context and report success when it should return nil. Addresses tinygo-org/tinygo issues 2759 and 3510.
47 lines
782 B
Plaintext
47 lines
782 B
Plaintext
# simple recover
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running panic...
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recovering...
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recovered: panic
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# recover with result
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running panic...
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recovered: panic
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result: 3
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# nested defer frame
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deferred nested function
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recovered: panic
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# nested panic: panic inside recover
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recovered 1: panic
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recovered 2: foo
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# panic inside defer
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recovered: panic
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# panic replace
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panic 1
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panic 2
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recovered: panic 2
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# defer panic
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defer panic
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recovered from deferred call: deferred panic
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# indirect recover
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indirect recover returned: indirect panic
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# runtime.Goexit
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Goexit deferred function, recover is nil: true
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# repanic
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inner, repanicking
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outer recovered: repanic value
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# recover runtime errors
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recovered: index
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recovered: index from helper
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recovered: slice
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recovered: type assert
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recovered: empty interface type assert
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