Valgrind and Python

Esa A E Peuha esa.peuha at helsinki.fi
Sat Nov 10 01:38:57 CET 2007


Running Python 2.5.1 under Valgrind is interesting; just starting it and
then pressing Ctrl-D produces this:

==27082== ERROR SUMMARY: 713 errors from 56 contexts (suppressed: 10 from 1)
==27082== malloc/free: in use at exit: 1,243,153 bytes in 508 blocks.
==27082== malloc/free: 3,002 allocs, 2,494 frees, 2,748,487 bytes allocated.
==27082== For counts of detected errors, rerun with: -v
==27082== searching for pointers to 508 not-freed blocks.
==27082== checked 1,399,984 bytes.
==27082== 
==27082== LEAK SUMMARY:
==27082==    definitely lost: 0 bytes in 0 blocks.
==27082==      possibly lost: 17,072 bytes in 58 blocks.
==27082==    still reachable: 1,226,081 bytes in 450 blocks.
==27082==         suppressed: 0 bytes in 0 blocks.
==27082== Reachable blocks (those to which a pointer was found) are not shown.
==27082== To see them, rerun with: --show-reachable=yes

A lot of those 713 errors occur in the various deallocation functions.

-- 
Esa Peuha
student of mathematics at the University of Helsinki
http://www.helsinki.fi/~peuha/



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