[haiku-bugs] Re: [Haiku] #11883: Debugger fails to parse debug output generated by rustc/llvm
- From: "anevilyak" <trac@xxxxxxxxxxxx>
- Date: Sun, 01 Mar 2015 15:44:12 -0000
#11883: Debugger fails to parse debug output generated by rustc/llvm
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Reporter: nielx | Owner: anevilyak
Type: enhancement | Status: new
Priority: low | Milestone: R1
Component: Applications/Debugger | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by anevilyak):
Replying to [comment:3 nielx]:
> Question: not recognizing the source file, where would I start?
That depends on which of the above two problems it's hitting ; if it's
failing to parse the actual DWARF output due to hitting a construct it
doesn't know how to handle, then it will wind up falling back to basic
disassembly. If that's the case, then tracking down what it's not able to
handle will entail enabling some tracing via http://cgit.haiku-
os.org/haiku/tree/build/config_headers/apps_debugger_config.h ; note that
you can create a copy of this file in the subdir build/user_config_headers
and modify it there for your personal uses. I would start by enabilng {{{
APPS_DEBUGGER_TRACE_DWARF_DIE }}} and possibly also {{{
APPS_DEBUGGER_TRACE_IMAGES }}}.
If you then build Debugger with those flags enabled, and try running it
against your rust binary from the CLI, you should get a fair amount of
output from the DWARF parsing process, which should also indicate an error
if it hits one. Unfortunately, there isn't currently much in the way of
documentation for Debugger's internals, so we'll have to take this as we
go with regards to finding problems. The lower level parsing code for
handling DWARF is primarily in the various files comprising the dwarf/
subdir in any case. I'd suggest taking this to email from here on out so
we don't wind up cluttering the ticket in any case though.
--
Ticket URL: <https://dev.haiku-os.org/ticket/11883#comment:4>
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