Re: AC_FUNC_MMAP lacks <unistd.h> include?

[Paul Eggert]

On 2023-05-10 21:06, Matt Turner wrote:

> We're mmap'ing a 1-byte file, and since the pagesize on amd64 is 4096
> bytes, only the first 4096 byte page (of two) is mapped. Accessing the
> second page triggers the SIGBUS.

Ouch, I misread that part of the test. Thanks for reporting that. I 
suppose we should go back to invoking getpagesize despite the hassle of 
configuring it. I installed the attached further patch; please give it a 
try.

0001-Fix-port-of-AC_FUNC_MMAP.patch
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