https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
--- Comment #16 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> --- Just another valgrind trace below. The bug is very sensitive, I have now a non-lto case and it is a relatively small file that causes a crash. However, just moving the file to a different directory is enough to make the error disappear. /data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: SUBROUTINE ddapc_eval_AmI(GAmI, c0, gfunc, w, particle_set, gcut,& Error: incompatible types in PHI argument 0 integer(kind=8) unsigned long /data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: Error: location references block not in block tree S.96_21 = PHI <0(149), S.96_3(151)> /data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: Error: invalid PHI argument _352 ==31829== Invalid read of size 2 ==31829== at 0x8E16A8: useless_type_conversion_p(tree_node*, tree_node*) (gimple-expr.c:67) ==31829== by 0xB95BE9: verify_gimple_phi (tree-cfg.c:4658) ==31829== by 0xB95BE9: verify_gimple_in_cfg(function*, bool) (tree-cfg.c:4952) ==31829== by 0xA82F7C: execute_function_todo(function*, void*) (passes.c:1945) ==31829== by 0xA839F3: execute_todo(unsigned int) (passes.c:2000) ==31829== by 0xA8612B: execute_one_pass(opt_pass*) (passes.c:2329) ==31829== by 0xA866BF: execute_pass_list_1(opt_pass*) (passes.c:2389) ==31829== by 0xA866D1: execute_pass_list_1(opt_pass*) (passes.c:2390) ==31829== by 0xA866D1: execute_pass_list_1(opt_pass*) (passes.c:2390) ==31829== by 0xA86714: execute_pass_list(function*, opt_pass*) (passes.c:2400) ==31829== by 0x78C013: cgraph_node::expand() (cgraphunit.c:1965) ==31829== by 0x78D902: expand_all_functions (cgraphunit.c:2101) ==31829== by 0x78D902: symbol_table::compile() (cgraphunit.c:2450) ==31829== by 0x78F86D: symbol_table::finalize_compilation_unit() (cgraphunit.c:2540) ==31829== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==31829== /data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: internal compiler error: Segmentation fault