Errors seen in LOGS/Io-language-20080330-8.fc17.2

This is a summary of errors seen when compiling with an experimental static analysis tool

Raw build logs can be seen here

Reference count too low

Code paths in which the reference count of an object is left too low. This could lead to the object being deallocated too early, triggering segfaults when later accessed. Over repeated calls, these errors could accumulate, increasing the likelihood of a segfault.

Reference leaks

Code paths in which the reference count of an object is left too high, leading to memory leaks

Segfaults within error-handling paths

Code paths in error-handling that will lead to a segmentatation fault (e.g. under low memory conditions)

Possible reference leaks

Code paths in which the reference count of an object might too large - but in which the reference in question came from a function not known to the analyzer.

The analyzer assumes such references are new references, but if the function returns a borrowed reference instead, it's probably not a bug

Returning (PyObject*)NULL without setting an exception

These messages are often false-positives: the analysis tool has no knowledge about internal API calls that can lead to an exception being set

source/IoPython.c

convertIo

returning (PyObject*)NULL without setting an exception