Re: Intellisense

From:
"Tom Serface" <tom@camaswood.com>
Newsgroups:
microsoft.public.vc.ide_general
Date:
Wed, 21 Oct 2009 06:40:41 -0700
Message-ID:
<DEFC2188-F99E-491B-B293-557BA9C4091A@microsoft.com>
When I have problems with Intellisense I typically delete the .ncb files for
the projects in my solution and do a complete rebuild of the solution and
that usualy fixes it. Intellisense is such an intricate weaving of "stuff"
in the IDE I doubt that it will ever be perfect, but it is very useful even
in it's imperfection.

I don't think hanging is every appropriate though :o)

Tom

"Victor Bazarov" <v.Abazarov@comAcast.net> wrote in message
news:hbn0hm$5sk$1@news.datemas.de...

Intellisense is not working again...

I know, I know, "disable it". But I like the feature! When it works,
that is...

I had it working for me for a few months, and no idea what made it work
after I had had trouble with it for years. No serious updates, the same
old VS2008 with SP... Same old 'feacp.dll', AFAICT.

Anyway, yesterday it stopped working. Just gets stuck on some file, 1436
files from the end. I have no idea why. I have no idea what file it is
(or I could have edited it some to try to push IS over the hump). What is
worse is if I try right-clicking, it hangs, because it tries using the
same hanging thread, I guess, when enabling/disabling "Go to definition"
or "Go to declaration" entries on the local menu. So, once IS hangs, do
not use the local menu, or the whole IDE hangs. Oh, and you can't close
the IDE, because the IS thread is hanging (going in an infinite loop? one
of my CPUs is used up by it). So, you have to kill IDE and lose your
layout, your breakpoints, etc. I hate that.

Anyway, today I decided to look where this POS (S is for 'Software')
hangs, so I fired up another VS2008 and attached to the first one, with
the hanging Intellisense. So, lo and behold, one of the threads has this
call stack:

feacp.dll!5bbd7a38()

 [Frames below may be incorrect and/or missing, no symbols loaded for
feacp.dll] feacp.dll!5bbd8809() feacp.dll!5bbd7bdf() feacp.dll!5bbd9d56()
feacp.dll!5bbdf07d() feacp.dll!5bc852c6() feacp.dll!5bbdfbbd()
feacp.dll!5bb94907() feacp.dll!5bbd8809() - recursive? (see 6 calls up)
 feacp.dll!5bbd7bdf() - recursive?
 feacp.dll!5bbd9d56() - recursive?
 feacp.dll!5bbdf210() feacp.dll!5bba5e22() feacp.dll!5bb41be4()
feacp.dll!5bba7150() feacp.dll!5bca1959()
ntdll.dll!_ZwAllocateVirtualMemory@24() + 0xc bytes
kernel32.dll!7792b85b()

msvcr90.dll!_stricmp(const char * dst=0x00000007, const char *

src=0xfffffffe) Line 105 + 0xc bytes C++

(yes, it's hanging in 'stricmp', in 'stricmp.c', line 105 - I have the
sources for the C run-time, and so do you if you have 'Pro' or above, I
believe).

Why '_ZwAllocateVirtualMemory@24' calls into 'feacp.dll', I have no idea.
Of course, I might have an idea if I had the debug symbols for
'feacp.dll'... Or the source. <wink-wink>

I know MS has redone IS in VS2010. It's now all fine and dandy, no
problems whatsoever, I am sure. But we're not going to switch for at
least two more years - company policy. So, we're going to suffer with or
without IS *unless* MS decides to open up and give us some information on
the sometimes-not-working Intellisense 2008. How hard can that be?

Take this as an open letter to Microsoft Visual Studio Dev team. Come on,
folks, you know you want it fixed, give us a chance! I don't have much
time to spend on it, but maybe, just maybe, I can find that elusive
problem (thread lock? an infinite loop?), and you can fix it for good...
How many people is it going to make happier? By my estimates, many.

V
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