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
