patch_feature_section
patch_feature_section(8, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(~8, &fixup);
patch_feature_section(0xF, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(~0xF, &fixup);
check(patch_feature_section(0xF, &fixup) == 1);
check(patch_feature_section(0, &fixup) == 1);
check(patch_feature_section(~0xF, &fixup) == 1);
patch_feature_section(flag, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(~flag, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(0, &fixup);
patch_feature_section(0, &fixup);