Win2K not supported any longer?

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What steps will reproduce the problem?
1. Compiled tcmalloc_minimal_unittest with MSVC.NET 2003, Win2k

What is the expected output? What do you see instead?

Unhandled exception at 0x778a2f0c in tcmalloc_minimal_unittest.exe:
0xC0000005: Access violation writing location 0x00000000.

in GetStackTrace in DoSampledAllocation (and on other occasions).

What version of the product are you using? On what operating system?

1.1

Please provide any additional information below.

Probably it is just that Win 2k is not supported. Than this could be noted
in README.windows or INSTALL. For me it was the last straw that made me
change the operating system.

Original issue reported on code.google.com by weidenri...@gmx.de on 15 Apr 2009 at 5:52

[GoogleCodeExporter]

Interesting -- I don't have a win2k machine to test on, so I don't know what 
might be
going on here.  It looks like something is being set to NULL that ought not be, 
but I
don't know what it is.  In theory tcmalloc should work fine on win2k.

I'm planning on making a new tcmalloc release this week (fingers crossed!)  It 
has a
few windows fixes, which might magically fix the problem here.  I know you've 
already
upgraded the OS, but if you will happen to be able to try the new tcmalloc and 
see if
it works better on win2k, that would be great to see.  Otherwise, I don't know 
how
much I can look into this.

Original comment by csilv...@gmail.com on 15 Apr 2009 at 7:01

• Added labels: Priority-Medium, Type-Defect

[GoogleCodeExporter]

I will try it out.

Original comment by weidenri...@gmx.de on 15 Apr 2009 at 7:16

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If I make GetStackTrace in stacktrace_win32-inl.h return 0 everytime, there is 
no
crash. But this is surely not a valid fix.

Original comment by weidenri...@gmx.de on 15 Apr 2009 at 8:52

[GoogleCodeExporter]

Actually, that fix is fine.  GetStackTrace is still rather experimental on 
windows. 
It isn't required for correctness, it just gives access to some debugging info. 
 So
feel free to use that for now.  This narrows down where the crash might be!  
That's
very helpful. 

Original comment by csilv...@gmail.com on 15 Apr 2009 at 9:06

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We recently discovered that RtlCaptureStackBackTrace is present in ntdll on 
Win2k, 
but it crashes if you call it.  I don't know if it crashes on every input, but 
it 
seems to be unusable for anything serious.

Original comment by dvi...@gmail.com on 15 Apr 2009 at 10:49

[GoogleCodeExporter]

That's good to know.  I'll update the docs for Win2K.

Original comment by csilv...@gmail.com on 15 Apr 2009 at 11:12

• Changed state: Started

[GoogleCodeExporter]

(Not really fixed, but at least documented!)

Original comment by csilv...@gmail.com on 17 Apr 2009 at 5:23

• Changed state: Fixed