/home/rxc92/project/Python-2.5.2/Modules/_sre.c (pattern_search)
Line 2740

Elsewhere in the codebase, state_reset is called on the first parameter
of sre_search before sre_search is invoked.  The does not occur here.

Can you provide a test case demonstrating a problem?

Examples:
/Python-2.5.2/Modules/_sre.c Lines 3289 - 3297 (scanner_search)
/Python-2.5.2/Modules/_sre.c Lines 2349 - 2357 (pattern_subx)
/Python-2.5.2/Modules/_sre.c Lines 2197 - 2205 (pattern_split)
/Python-2.5.2/Modules/_sre.c Lines 2067 - 2075 (pattern_findall)

This bug was found using a research tool that finds potential neglected
condition bugs by examining a code base, deducing rules from the code
base, and finding violations of those rules.  
I have not attempted to demonstrate a problem visible to users from this
bug, and so cannot provide a test case demonstrating a problem.

There is no issue: in pattern_search, state_init is called before
sre_search is invoked. And state_init contains all the operations
performed by state_reset.

The invariant here is that each call to sre_search must be preceded by a
call to state_reset *or* state_init. I don't know whether your tool can
detect this.