Dominique Pelle wrote:

> Bram Moolenaar wrote:
> 
> > When running test 86 under valgrind several memory access errors are
> > reported.  Here is the first one:
> >
> > ==31463== Invalid read of size 4
> > ==31463==    at 0x4C6244A: PyObject_Free (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C1E8E6: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B8FC23: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C02EE2: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C036CA: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4BF3DC9: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4BFC916: PyImport_ImportModuleLevel (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B71B92: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C14128: PyCFunction_Call (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C12F1F: PyObject_Call (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C1386A: PyEval_CallObjectWithKeywords (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B2C24B: PyEval_EvalFrameEx (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B30B04: PyEval_EvalCodeEx (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B30C42: PyEval_EvalCode (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B76281: PyImport_ExecCodeModuleEx (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==  Address 0x59fb010 is 288 bytes inside a block of size 2,731
> > free'd
> > ==31463==    at 0x402BF06: free (in
> > /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
> > ==31463==    by 0x4B7C5DC: PyMarshal_ReadLastObjectFromFile (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C02D65: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C036CA: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4BF3DC9: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4BFC916: PyImport_ImportModuleLevel (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B71B92: ??? (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C14128: PyCFunction_Call (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C12F1F: PyObject_Call (in /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4C1386A: PyEval_CallObjectWithKeywords (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B2C24B: PyEval_EvalFrameEx (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B30B04: PyEval_EvalCodeEx (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B30C42: PyEval_EvalCode (in
> > /usr/lib/libpython2.7.so.1.0)
> > ==31463==    by 0x4B76281: PyImport_ExecCodeModuleEx (in
> > /usr/lib/libpython2.7.so.1.0)
> >
> > I would appreciate it if someone can look into it.  Note that this may
> > not be a problem in Vim but in Python.  Or the way Vim uses Python.
> 
> 
> This is a known caveat with Python. These Valgrind errors can be
> silenced by configuring and compiling the Python lib with:
> 
>    ./configure --without-pymalloc.
> 
> More details can be found at:
> 
>     http://svn.python.org/view/python/trunk/Misc/README.valgrind?view=markup
> 
> I remember looking into this a long time ago. I put a note
> about it here (see section 4 near the end:  "Known issues and limitations"):
> 
>   http://dominique.pelle.free.fr/valgrind.txt.html

Thanks.  So these are all false alarms?

-- 
Kiss me twice.  I'm schizophrenic.

 /// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net   \\\
///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\  an exciting new programming language -- http://www.Zimbu.org        ///
 \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///

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