http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53521
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-31 08:19:34 UTC --- (In reply to comment #7) > (In reply to comment #5) > > That is clearly a bug in the Fortran FE. > > D.1888 = __builtin_realloc (atmp.0.data, D.1887); > ... > > if (D.1887 == 0) > > D.1888 = 0B; > > means that D.1888 isn't freed. > > Well spotted! I got distracted by the valgrind result of 0 bytes - and by the > later FREE check, which should be okay. > > The problem is in gcc/fortran/trans.c's gfc_call_realloc. I guess passing MAX (D.1887, 1) as second argument to realloc above and omitting that if (D.1887 == 0) D.1888 = 0B; stmt would be easiest and hopefully not much slower (both sequences have one conditional). Because, I believe you still have free at the end anyway.
