frysk-0.4/build/../frysk-sys/lib/dwfl/jni/DwarfDie.cxx:409:64: warning: ordered comparison of pointer with integer zero [-Wextra] if (dwarf_attr_integrate (die, DW_AT_location, &loc_attr) >= 0) { Also, something similar at line 441 in the same file frysk-0.4/build/../frysk-sys/lib/dwfl/jni/DwarfDie.cxx:441:76: warning: ordered comparison of pointer with integer zero [-Wextra] if (dwarf_attr_integrate (die, DW_AT_data_member_location, &loc_attr) >= 0) {