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runtime: save CPU registers for the frame calling runtime.sigpanic #37683

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aarzilli opened this issue Mar 5, 2020 · 2 comments
Open

runtime: save CPU registers for the frame calling runtime.sigpanic #37683

aarzilli opened this issue Mar 5, 2020 · 2 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. Debugging NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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@aarzilli
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aarzilli commented Mar 5, 2020

When a OS signal/exception causes a panic a call to runtime.sigpanic is pushed onto the goroutine stack but a debugger has no way to recover the state of the CPU registers for the frame that caused the signal to happen. Having them would be useful for debugging optimized executables (where some variables may be registerized) as well as debugging problems with functions implemented in assembly.

Context: go-delve/delve#1838 (comment)

cc @heschik

@gopherbot
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gopherbot commented Mar 5, 2020

Change https://golang.org/cl/221981 mentions this issue: runtime: save signal context before calling sigpanic on unix/windows

@heschi heschi changed the title [Debugging] runtime: save CPU registers for the frame calling runtime.sigpanic runtime: save CPU registers for the frame calling runtime.sigpanic Mar 5, 2020
@toothrot toothrot added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Mar 9, 2020
@toothrot toothrot added this to the Backlog milestone Mar 9, 2020
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toothrot commented Mar 9, 2020

/cc @aclements @rsc @randall77

@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 7, 2022
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Labels
compiler/runtime Issues related to the Go compiler and/or runtime. Debugging NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.
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