Re: ptrdiff_t overflow checks for malloc-posix etc.

[Paul Eggert]

On 4/18/21 1:23 PM, Bruno Haible wrote:
> If we put the test in a module that is marked as
>
>      Status:
>      privileged-test

It shouldn't require root access to test.

I installed the attached instead, as this is simpler. If there are 
problems with PTRDIFF_MAX + 1, the test program might thrash or maybe 
even crash the kernel, but that's good enough since there shouldn't be 
problems. These tests are not immune to arbitrary compiler optimization 
tricks but it's not worth the trouble to try to bypass the trucks.

0001-malloc-gnu-tests-etc.-test-ptrdiff_t-overflow.patch
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