| commit | 1b49a86ecece3978ceba60c372327b9cbcc68501 | [log] [tgz] |
|---|---|---|
| author | David Crawshaw <crawshaw@golang.org> | Sun Mar 08 11:37:02 2015 -0400 |
| committer | David Crawshaw <crawshaw@golang.org> | Tue Mar 17 12:12:48 2015 +0000 |
| tree | cec7efed39acac32ac8161eb2b241a45d09c0fb4 | |
| parent | 1f3fe910664069a94acdbd27d2ba3e6f5b256dbe [diff] |
runtime/cgo: catch EXC_BAD_ACCESS on darwin/arm The Go builders (and standard development cycle) for programs on iOS require running the programs under lldb. Unfortunately lldb intercepts SIGSEGV and will not give it back. https://llvm.org/bugs/show_bug.cgi?id=22868 We get around this by never letting lldb see the SIGSEGV. On darwin, Unix signals are emulated on top of mach exceptions. The debugger registers a task-level mach exception handler. We register a thread-level exception handler which acts as a faux signal handler. The thread-level handler gets precedence over the task-level handler, so we can turn the exception EXC_BAD_ACCESS into a panic before lldb can see it. Fixes #10043 Change-Id: I64d7c310dfa7ecf60eb1e59f094966520d473335 Reviewed-on: https://go-review.googlesource.com/7072 Reviewed-by: Minux Ma <minux@golang.org> Run-TryBot: David Crawshaw <crawshaw@golang.org>
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