Re: a question about the use of MAP_ANON in libsigsegv

[Bruno Haible]

Hi Dennis,

> -std=iso9899:1999 -pedantic -pedantic-errors
> ...
> ./stackvma-rofile.c:154:22: error: call to undeclared function 
> 'getpagesize'; ISO C99 and later do not support implicit function 
> declarations [-Werror,-Wimplicit-function-declaration]
>            pagesize = getpagesize ();
>                       ^
> ./stackvma-rofile.c:169:36: error: use of undeclared identifier 
> 'MAP_ANONYMOUS'
>                                     MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
>                                     ^

I explained already in
<https://lists.gnu.org/archive/html/bug-libsigsegv/2022-10/msg00000.html>
why this cannot work.

Bruno