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Date: Mon, 4 Feb 2008 12:03:43 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Memory leak problem reported with gfortran
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On Feb  3 19:03, Jerry DeLisle wrote:
> I have continued my testing here and I am seeing this with valgrind on 
> linux. When I was running the 10000 loops I did not see these errors roll 
> by upfront initially.
>
> ==25454== Conditional jump or move depends on uninitialised value(s)
> ==25454==    at 0x4333F1: strlen (in /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x45DE74: fillin_rpath (in /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x45FC35: _dl_init_paths (in /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x439CDE: _dl_non_dynamic_init (in 
> /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x43A3DA: __libc_init_first (in 
> /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x414CF5: (below main) (in /home/jerry/prs/pr35063/a.out)
> ==25454==
> ==25454== Conditional jump or move depends on uninitialised value(s)
> ==25454==    at 0x4333BD: strlen (in /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x408087: write_integer (write.c:612)
> ==25454==    by 0x40AEDD: _gfortrani_list_formatted_write (write.c:785)
> ==25454==    by 0x400330: MAIN__ (in /home/jerry/prs/pr35063/a.out)
> ==25454==    by 0x40043B: main (fmain.c:21)
>
> The end of the run shows:
>
> ==25454== Use of uninitialised value of size 8
> ==25454==    at 0x41AB57: exit (in /home/jerry/prs/pr35063/a.out)
> ==25454==
> ==25454== ERROR SUMMARY: 12 errors from 3 contexts (suppressed: 0 from 0)
> ==25454== malloc/free: in use at exit: 0 bytes in 0 blocks.
> ==25454== malloc/free: 0 allocs, 0 frees, 0 bytes allocated.
> ==25454== For counts of detected errors, rerun with: -v
> ==25454== All heap blocks were freed -- no leaks are possible.
>
> But no memory leaks. I don't know if this is related or not.  I will keep 
> digging.

It looks suspicious.  I have no trouble to imagine different kinds of
problems on different OSes as a result and it wouldn't be the first
time.  Pitty that valgrind doesn't exist for Cygwin.  At least we have
strace ;)


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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