Jeff King <> writes:

> So you could also check for "left == nstart" before the loop even
> begins. I think your fix (to just make the loop more robust to that
> precondition) is better, though, as the rest of the code does the right
> thing with such a value of nend.


> It looks like t4203 triggers this problem. Curious that valgrind does
> not find it. I guess since it does not have compiler support, it cannot
> find out-of-bound errors on stack buffers. Does the rest of the test
> suite turn up clean with AddressSanitizer?

I tested your 'master' and your 'pu' with expensive tests enabled and both
are clean after fixing t4203.

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