[haiku-bugs] Re: [Haiku] #10459: [Debugger] Investigate anomalous single stepping behavior
- From: "anevilyak" <trac@xxxxxxxxxxxx>
- Date: Fri, 24 Jan 2014 00:19:45 -0000
#10459: [Debugger] Investigate anomalous single stepping behavior
-------------------------------------+----------------------------
Reporter: anevilyak | Owner: anevilyak
Type: bug | Status: closed
Priority: normal | Milestone: R1
Component: Applications/Debugger | Version: R1/Development
Resolution: no change required | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Changes (by anevilyak):
* status: new => closed
* resolution: => no change required
Comment:
After digging a bit further, I'm forced to conclude that this is indeed
simply a quirk of the line number program in question. Both objdump and
our state machine agree that line 21 (aka "return 5") spans range
0x8f2-0x917, unrelocated. As you pointed out, 0x903 is the starting point
of the object destructor + epilogue, aka in the middle of the
aforementioned statement, and that is in fact precisely the address we
wind up at after stepping over line 19. So yes, gcc has condensed that
last return + destructor/epilogue into a single statement for debugging
purposes, and there's unfortunately nothing we can really do to simplify
the confusion there.
--
Ticket URL: <https://dev.haiku-os.org/ticket/10459#comment:5>
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