RHEL5 gcc44 optimisation of thread cancellation code can lead to double free or corruption
Issue
When compiled with g++44 and optimsation greater than 1, for example -O2 the resulting binary may abort with a similar message to the following.
*** glibc detected *** ./optim2: double free or corruption (out): 0x00000000415aa0e0 ***
Environment
Red Hat Enterprise Linux
5.8
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