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Date: Wed, 4 Aug 2004 15:31:27 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: gethostbyname() crashes
Message-ID: <20040804193127.GA21888@trixie.casa.cgf.cx>
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References: <usmb2zyt5 DOT fsf AT gnu DOT org> <cerdcb$100$1 AT sea DOT gmane DOT org>
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On Wed, Aug 04, 2004 at 02:28:10PM -0500, Pawel Slusarz wrote:
>"Sam Steingold" <sds AT gnu DOT org> wrote in message
>news:usmb2zyt5 DOT fsf AT gnu DOT org...
>> CYGWIN_NT-5.0 1.5.10(0.116/4/2) 2004-05-25 22:07 i686
>>
>> (gdb) p gethostbyname("ftp.gnu.org")
>
>
>I get the same. Maybe a bug that was introduced recently?
>
>(gdb) list
>1       #include <stdio.h>
>2       #include <netdb.h>
>3
>4       int main(int argc, char *argv[])
>5       {
>6               char name[] = "localhost\0";
>7               gethostbyname(name);
>8               printf("Hello, world\n");
>9
>10              return 0;
>(gdb) break 7
>Breakpoint 1 at 0x4010bc: file test.c, line 7.
>(gdb) run
>Starting program: /cygdrive/c/shared/test/a.exe
>
>Breakpoint 1, main (argc=1, argv=0xa0521d0) at test.c:7
>7               gethostbyname(name);
>(gdb) step
>
>Program received signal SIGSEGV, Segmentation fault.
>0x7c5746b9 in KERNEL32!IsBadWritePtr ()
>   from /cygdrive/c/WINNT/system32/KERNEL32.DLL

Nope.  Not a bug.  Search the archives for IsBadWritePtr.  I'm sure it
will be instructive.

Try actually running the program, and you're see "Hello World".

cgf

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