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runtime: darwin/arm lldb needs to pass SIGSEGV #10043

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crawshaw opened this issue Mar 1, 2015 · 3 comments
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runtime: darwin/arm lldb needs to pass SIGSEGV #10043

crawshaw opened this issue Mar 1, 2015 · 3 comments
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@crawshaw
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crawshaw commented Mar 1, 2015

The darwin/arm builder runs programs via lldb. (It is the only way to remotely dial the device running the binary.) The debugger likes to intercept signals that Go needs for normal operation. For example, there is a hidden panic inside the html/template tests that jams lldb. The obvious command does not work:

process handle SIGSEGV --stop false --pass true --notify false

It looks like passing on these signals may not be supported yet:

http://lists.cs.uiuc.edu/pipermail/lldb-dev/2013-July/002009.html
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minux commented Mar 1, 2015 via email

@crawshaw
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crawshaw commented Mar 1, 2015

I tried that manually. Giving lldb a continue instruction does not seem to work. (Even several times.)

crawshaw added a commit that referenced this issue Mar 3, 2015
@crawshaw
net/http: disable segfaulting test on darwin/arm
4f6630d 
Issue #10043

Change-Id: I6ce7f303cd96ac575f7a673dd4a459339382d22e
Reviewed-on: https://go-review.googlesource.com/6692
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@crawshaw crawshaw self-assigned this Mar 4, 2015
@crawshaw
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LLDB engineer says its a long standing OS X bug and recommends we work around it:

https://llvm.org/bugs/show_bug.cgi?id=22868

@mikioh mikioh changed the title builder: darwin/arm lldb needs to pass SIGSEGV runtime: darwin/arm lldb needs to pass SIGSEGV Mar 17, 2015
@mikioh mikioh added this to the Go1.5 milestone Mar 17, 2015
@crawshaw crawshaw mentioned this issue Mar 19, 2015
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crawshaw added a commit that referenced this issue Mar 23, 2015
@crawshaw
net/http: enable segfaulting test on darwin/arm
5bf9249 
Issue #10043 was resolved by https://golang.org/cl/7072.
This test now passes.

Change-Id: I7bdef63d9ee4edcede23613a14a2ddce14018f34
Reviewed-on: https://go-review.googlesource.com/7931
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@golang golang locked and limited conversation to collaborators Jun 25, 2016
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