http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51957
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-23 07:25:19 UTC --- Compile with -m64 -g -O2 -fprofile-generate (*.gcda file missing), look for DW_OP_deref in .debug_loc section.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51957
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-23 07:25:19 UTC --- Compile with -m64 -g -O2 -fprofile-generate (*.gcda file missing), look for DW_OP_deref in .debug_loc section.