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Date: Tue, 21 Nov 2000 19:41:42 -0500
Message-Id: <200011220041.TAA22145@envy.delorie.com>
X-Authentication-Warning: envy.delorie.com: dj set sender to dj AT envy DOT delorie DOT com using -f
From: DJ Delorie <dj AT delorie DOT com>
To: zackw AT Stanford DOT EDU
CC: Kelley DOT Cook AT home DOT com, GCC-Bugs AT gcc DOT gnu DOT org, GCC-patches AT gcc DOT gnu DOT org,
        Cygwin AT sources DOT redhat DOT com
In-reply-to: <20001121162522.G17712@wolery.stanford.edu> (zackw@Stanford.EDU)
Subject: Re: Reason for cygwin GCC 2.97 non-bootstrap found
References: <200011211839 DOT eALIdOd15553 AT ahmlir2 DOT mail DOT eds DOT com> <20001121162522 DOT G17712 AT wolery DOT stanford DOT edu>


> Could you [since Kelley is out of town till Sunday, this "you" is
> anyone with a convenient cygwin installation] please compile and run
> the appended test program under cygwin?  It should either exit
> successfully, or crash; I need to know which.

It runs OK.

> #include <sys/types.h>
> #include <sys/mman.h>
> #include <unistd.h>
> #include <string.h>
> 
> #define PAGEPROT PROT_READ|PROT_WRITE
> #define MAPFLAGS MAP_PRIVATE|MAP_ANONYMOUS
> 
> int main(void)
> {
>   size_t pagesize = getpagesize();
>   char *base;
> 
>   base = mmap(0, 16*pagesize, PAGEPROT, MAPFLAGS, -1, 0);
>   memset(base, 0xAB, 16*pagesize);
> 
>   munmap(base + 4*pagesize, pagesize);
> 
>   memset(base, 0xCD, 4*pagesize);
>   memset(base + 5*pagesize, 0xCD, 10*pagesize);
> 
>   return 0;
> }  

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