[Bug fortran/51529] [OOP] gfortran.dg/class_to_type_1.f03 is miscompiled: Uninitialized variable used
pault at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Dec 13 18:50:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51529
--- Comment #1 from Paul Thomas <pault at gcc dot gnu.org> 2011-12-13 18:14:49 UTC ---
(In reply to comment #0)
> $ gfortran -g gfortran.dg/class_to_type_1.f03
> $ MALLOC_PERTURB_= ./a.out
> $ MALLOC_PERTURB_=33 ./a.out
>
> A fatal error occurred! Backtrace for this error:
> ...
> #6 0x400929 in __copy_MAIN___T2 at class_to_type_1.f03:5
> #7 0x4013D1 in MAIN__ at class_to_type_1.f03:17
>
>
> That's a typical sign for code which requires that "malloc" returns '\0'-set
> memory, i.e. gfortran generates code which uses an uninitialized variable.
I cannot reproduce this on x86_64/FC9. Nor can I see anything obvious in the
code.... on the other hand, there is a lot of it!
I'll try on my Debian equipped laptop tomorrow.
Paul
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