Re: gcc 4.2 profiling breaks argv

Yuri Pankov wrote:
> On Fri, Aug 03, 2007 at 01:53:20PM +1000, Nick Frampton wrote:
>   
>> Hi all,
>>
>> Programs segfault when attempting to access argv from main when compiled 
>> under gcc 4.2.0 with the -pg profiling option.  The following program 
>> illustrates this problem.
>>
>> $ cat test.c
>> #include <stdio.h>
>> int main (int argc, char **argv) {
>>   fprintf (stderr, "argv=%p\n", argv);
>>   return 0;
>> }
>> $ cc -c -o test.o -pg  test.c  &&  cc -o test  -pg  test.o
>> $ ./test
>> Segmentation fault (core dumped)
>>
>> $ cc -v
>> Using built-in specs.
>> Target: i386-undermydesk-freebsd
>> Configured with: FreeBSD/i386 system compiler
>> Thread model: posix
>> gcc version 4.2.0 20070514 [FreeBSD]
>>
>> $ uname -a
>> FreeBSD test03.statseeker.com 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Fri Aug  
>> 3 11:07:03 EST 2007     
>> root_at_test03.statseeker.com:/usr/obj/usr/src/sys/GENERIC  i386
>>
>> This issue was reported on this list on 5th July 2007 by Garrett Cooper but 
>> argv was not mentioned in that post.  I have not seen this problem reported 
>> elsewhere (e.g. on the gcc mailing list).
>>
>> -Nick
>> **
>>     
>
> FWIW, I can't reproduce it on amd64:
>
>   
>> cc -c -o test.o -pg test.c && cc -o test -pg test.o
>> ./test
>>     
> argv=0x7fffffffe8b0
>   
>> cc -v
>>     
> Using built-in specs.
> Target: amd64-undermydesk-freebsd
> Configured with: FreeBSD/amd64 system compiler
> Thread model: posix
> gcc version 4.2.0 20070514 [FreeBSD]
>
>
> Yuri
>   

    I've already posted 2 other threads, and I believe a bug report 
about this.
-Garrett