Re: [Valgrind-users] Valgrind malloc problem

[Patrick A. <pat...@no...>]

file says:

ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped

so it looks like everything is properly 64 bit compiled. I also
tried putting in -m64 explicitly.

Patrick

On Thu, May 14, 2009 at 07:15:12PM -0600, tom fogal wrote:
> Patrick Alken <pat...@no...> writes:
> > It is a 64 bit machine, and I reinstalled valgrind using
> > --enable-only64bit, and it did use the -m64 when compiling.
> 
> I meant compiling the *app* 64bit.  e.g. if you're running:
> 
>   valgrind --whatever ./a.out
> 
> then you should get a.out via:
> 
>   gcc -blah -m64 -moreblah something.c
> 
> you can also check if the binary under test is 64bit with `file'.
> 
> -tom
> 
> > Patrick
> > 
> > On Thu, May 14, 2009 at 03:03:37PM -0600, tom fogal wrote:
> > > Pat...@no... writes:
> > > >   I am using valgrind 3.4.1 to try to find a memory leak. My
> > > > program has an initial routine which allocates a lot of memory -
> > > > around 1 GB. When I run the program by itself it runs fine, however
> > > > when I run it under valgrind, one of the many malloc calls in
> > > > the initial routine fails.
> > > > 
> > > > Does anyone know why this would happen? There is plenty of memory
> > > > on the machine (64 GB).
> > > 
> > > Are you running in 32bit mode?  Make sure you're passing -m64 when
> > > compiling with gcc.
> > > 
> > > -tom
> > > 
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