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RE: Inconsistent results on two F9 boxes when running a trivial c++ program

Do the boxes have identical g++ installations? Seems like you've encountered
a small bug in the library, which sometimes seem to creep in between minor

Peter D. Roopnarine, Assoc. Curator
Dept. of Invertebrate Zoology & Geology
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-----Original Message-----
From: fedora-list-bounces redhat com on behalf of Agile Aspect
Sent: Fri 9/26/2008 4:14 PM
To: Community assistance, encouragement,and advice for using Fedora.
Subject: Re: Inconsistent results on two F9 boxes when running a trivial c++
Steve Searle wrote:
> Can anyone help. Through debugging a program I have created this trivial
> C++ program.
> #include <iostream>
> //int main(int argc, char *argv[]) {
> int main() {
> 	return 0;
> }
> I have two F9 boxes, both mounting an NFS partition.  When testing the
> program using valgrind, on one box there is no problem.  On the other
> box, it reports an error (full output at the end of this email).  This
> happens regardless of which box the program is compiled on.
> If the include line is removed, the error does not happen.
> Can anyone give me any pointers as to what the problem could be?
> Thanks
> Steve
> Valgrind output:
> $ valgrind ./a.out
> ==12095== Memcheck, a memory error detector.
> ==12095== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
> ==12095== Using LibVEX rev 1804, a library for dynamic binary translation.
> ==12095== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
> ==12095== Using valgrind-3.3.0, a dynamic binary instrumentation framework.
> ==12095== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
> ==12095== For more details, rerun with: -v
> ==12095== 
> ==12095== Invalid free() / delete / delete[]
> ==12095==    at 0x40052EA: operator delete(void*, std::nothrow_t const&)
> ==12095==    by 0x4215118: std::__verify_grouping(char const*, unsigned,
std::string const&) (locale_facets.cc:108)
> ==12095==    by 0x421604C: std::locale::_Impl::_Impl(char const*, unsigned)
> ==12095==    by 0x42160CC: std::locale::_Impl::_Impl(char const*, unsigned)
> ==12095==    by 0x42171F7: std::locale::locale() (basic_string.h:2189)
> ==12095==    by 0x42121CC: std::locale::_Impl::_Impl(std::locale::_Impl
const&, unsigned) (locale.cc:249)
> ==12095==    by 0x804857D: __static_initialization_and_destruction_0(int,
int) (in /tmp/a.out)
> ==12095==    by 0x80485B6: _GLOBAL__I_main (in /tmp/a.out)
> ==12095==    by 0x804864C: (within /tmp/a.out)
> ==12095==    by 0x8048413: (within /tmp/a.out)
> ==12095==    by 0x80485E8: __libc_csu_init (in /tmp/a.out)
> ==12095==    by 0x65F570: (below main) (libc-start.c:179)
> ==12095==  Address 0x42ae188 is not stack'd, malloc'd or (recently) free'd
> ==12095== 
> ==12095== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 15 from 1)
> ==12095== malloc/free: in use at exit: 0 bytes in 0 blocks.
> ==12095== malloc/free: 0 allocs, 1 frees, 0 bytes allocated.
> ==12095== For counts of detected errors, rerun with: -v
> ==12095== All heap blocks were freed -- no leaks are possible.

Isn't an invalid free() an error in the following sense that:

       "Address 0x42ae188 is not stack'd, malloc'd or (recently) free'd"

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