[boost] [test] msvc problems with user-testcase, shared_ptr and quick allocator

From: Juergen Hunold (hunold_at_[hidden])
Date: 2006-03-21 14:44:30

Hi !

I've been playing around with boost test and tried to run my test on my 
win32 box (after a needed hardware upgrade and reinstall) using msvc 
7.1. 
To my surprise the tests don't run anymore. I've tracked this down to 
the attached minimal testcase (using V2).  I admit that my setup is 
somewhat unusual, but now for the story:

I use:
- a user defined testcase ( to set up a lot of things in my tests, 
omitted here.)
- our project uses BOOST_SP_USE_QUICK_ALLOCATOR to speed up shared_ptr. 
(proven to boost performance by 50%)
- is multithreaded.

When running the testcase, the test runs smooth, but then the msvc 
debug-runtime bombs at program exit and fires up the debugger. It 
claims it has detected a memory leak.
The start of the message (see result.txt in attachment for full output):

====== BEGIN OUTPUT ======
Running 2 test cases...
user_testcase.cpp(27): error in "Tests::testFailure": failure

*** No errors detected
Detected memory leaks!
Dumping objects ->
{173} normal block at 0x00326030, 12 bytes long.
 Data: <0`2 0`2     > 30 60 32 00 30 60 32 00 CD CD CD CD 

The cause seems to be some static variables in the quick allocator that 
are not deleted at program exit. I think this a known issue. 
I've tried to disable the msvc runtime check but it failed. Using the 
debugger I've traced this down to 
boost/test/impl/execution_monitor.ipp and there to detect_memory_leaks 
(line 623). It seems that the call to  _CrtSetDbgFlag in line 629 is 
somehow failing. Myself being a linux programmer my wisdom ends at this 
point. This could even be a red herring and the failure might be caused 
by something else. 

Query: Can someone reproduce this ?
Query: Is this a bug in boost.test, boost.shared_ptr or my fault ?

Yours,

Jürgen

-- 
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