Add gcc-missing-case branch

.topdeps

@@ -0,0 +1 @@
+master

.topmsg

@@ -0,0 +1,8 @@
+From: Brian Behlendorf <behlendorf1@llnl.gov>
+Subject: [PATCH] gcc warning missing case
+
+Gcc ASSERT() missing cases are impossible
+
+Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
+
+---

zfs/lib/libdmu-ctl/zfs_ioctl.c

@@ -325,6 +325,8 @@ zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr)
 				return (EPERM);
 		}
 		break;
+	default:
+		break;
 	}
 
 	return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr));
@@ -1418,6 +1420,8 @@ zfs_set_prop_nvlist(const char *name, nvlist_t *nvl)
 			if (zpl_check_version(name, ZPL_VERSION_FUID))
 				return (ENOTSUP);
 			break;
+		default:
+			break;
 		}
 		if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
 			return (error);

zfs/lib/libzfs/libzfs_changelist.c

@@ -141,6 +141,8 @@ changelist_prefix(prop_changelist_t *clp)
 				 */
 				(void) zfs_unshare_iscsi(cn->cn_handle);
 				break;
+			default:
+				break;
 			}
 		} else {
 			/*
@@ -157,6 +159,8 @@ changelist_prefix(prop_changelist_t *clp)
 			case ZFS_PROP_SHARESMB:
 				(void) zfs_unshare_smb(cn->cn_handle, NULL);
 				break;
+			default:
+				break;
 			}
 		}
 	}

zfs/lib/libzfs/libzfs_dataset.c

@@ -74,6 +74,8 @@ zfs_type_to_name(zfs_type_t type)
 		return (dgettext(TEXT_DOMAIN, "snapshot"));
 	case ZFS_TYPE_VOLUME:
 		return (dgettext(TEXT_DOMAIN, "volume"));
+	default:
+		break;
 	}
 
 	return (NULL);
@@ -183,6 +185,8 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
 				zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
 				    "reserved disk name"));
 				break;
+			default:
+				break;
 			}
 		}
 
@@ -676,6 +680,8 @@ zfs_validate_properties(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 					    "component of '%s' is too long"),
 					    propname);
 					break;
+				default:
+					break;
 				}
 				(void) zfs_error(hdl, EZFS_BADPROP, errbuf);
 				goto error;
@@ -800,6 +806,8 @@ zfs_validate_properties(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 		case ZFS_PROP_NORMALIZE:
 			chosen_normal = (int)intval;
 			break;
+		default:
+			break;
 		}
 
 		/*
@@ -848,6 +856,8 @@ zfs_validate_properties(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl,
 					goto error;
 				}
 				break;
+			default:
+				break;
 			}
 		}
 	}
@@ -1090,6 +1100,8 @@ zfs_build_perms(zfs_handle_t *zhp, char *whostr, char *perms,
 				    dgettext(TEXT_DOMAIN,
 				    "set definition must begin with an '@' "
 				    "character"));
+			default:
+				break;
 			}
 			return (zfs_error(zhp->zfs_hdl,
 			    EZFS_BADPERMSET, whostr));
@@ -1519,6 +1531,8 @@ zfs_perm_get(zfs_handle_t *zhp, zfs_allow_t **zfs_perms)
 				    &nvpair_name(who_pair)[3]);
 				tree = &zallowp->z_sets;
 				break;
+			default:
+				break;
 			}
 
 			/*
@@ -1671,6 +1685,8 @@ zfs_deleg_perm_type_str(zfs_deleg_perm_type_t type)
 		return (dgettext(TEXT_DOMAIN, "property"));
 	case ZFS_DELEG_OTHER:
 		return (dgettext(TEXT_DOMAIN, "other"));
+	default:
+		break;
 	}
 	return ("");
 }
@@ -2053,6 +2069,8 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src,
 		mntopt_on = MNTOPT_NBMAND;
 		mntopt_off = MNTOPT_NONBMAND;
 		break;
+	default:
+		break;
 	}
 
 	/*

zfs/lib/libzpool/spa.c

@@ -386,6 +386,8 @@ spa_prop_validate(spa_t *spa, nvlist_t *props)
 			    strcmp(slash, "/..") == 0)
 				error = EINVAL;
 			break;
+		default:
+			break;
 		}
 
 		if (error)

zfs/lib/libzpool/vdev_label.c

@@ -441,6 +441,8 @@ vdev_inuse(vdev_t *vd, uint64_t crtxg, vdev_labeltype_t reason,
 
 		case VDEV_LABEL_SPARE:
 			return (spa_has_spare(spa, device_guid));
+		default:
+			break;
 		}
 	}