libxbps: fixed all warnings found by clang.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20100428213056-p1b7bh0llq8393r0

lib/download.c

@@ -211,14 +211,12 @@ xbps_fetch_file(const char *uri, const char *outputdir, bool refetch,
 	struct url_stat url_st;
 	struct fetchIO *fio = NULL;
 	struct timeval tv[2];
-	ssize_t bytes_read, bytes_written;
+	ssize_t bytes_read = -1, bytes_written;
 	off_t bytes_dld = -1;
-	char buf[4096], *filename, *destfile;
+	char buf[4096], *filename, *destfile = NULL;
 	int fd = -1, rv = 0;
 	bool restart = false;
 
-	filename = destfile = NULL;
-	bytes_read = bytes_written = -1;
 	fetchLastErrCode = 0;
 
 	/*

lib/plist.c

@@ -472,7 +472,7 @@ prop_dictionary_t
 xbps_read_dict_from_archive_entry(struct archive *ar,
 				  struct archive_entry *entry)
 {
-	prop_dictionary_t d;
+	prop_dictionary_t d = NULL;
 	size_t buflen = 0;
 	ssize_t nbytes = -1;
 	char *buf, *uncomp_buf;

lib/purge.c

@@ -83,7 +83,7 @@ remove_pkg_metadata(const char *pkgname)
 			return -1;
 		}
 
-		if ((rv = unlink(path)) == -1) {
+		if (unlink(path) == -1) {
 			if (flags & XBPS_FLAG_VERBOSE)
 				printf("WARNING: can't remove %s (%s)\n",
 				    pkgname, strerror(errno));

lib/remove_obsoletes.c

@@ -34,18 +34,14 @@
 int HIDDEN
 xbps_remove_obsoletes(prop_dictionary_t oldd, prop_dictionary_t newd)
 {
-	prop_object_iterator_t iter, iter2;
+	prop_object_iterator_t iter, iter2 = NULL;
-	prop_object_t obj, obj2;
+	prop_object_t obj, obj2 = NULL;
-	prop_string_t oldstr, newstr;
+	prop_string_t oldstr = NULL, newstr = NULL;
 	const char *array_str = "files";
 	char *buf = NULL;
 	int rv = 0;
 	bool found, dolinks = false;
 
-	iter = iter2 = NULL;
-	obj = obj2 = NULL;
-	oldstr = newstr = NULL;
-
 again:
 	iter = xbps_get_array_iter_from_dict(oldd, array_str);
 	if (iter == NULL)
@@ -110,7 +106,7 @@ again:
 		array_str = "links";
 		prop_object_iterator_release(iter2);
 		prop_object_iterator_release(iter);
-		iter = iter2 = NULL;
+		iter2 = NULL;
 		goto again;
 	}
 

lib/repository_findpkg.c

@@ -314,7 +314,7 @@ xbps_repository_update_pkg(const char *pkgname, prop_dictionary_t instpkg)
 		if (pkgrd == NULL) {
 			if (errno && errno != ENOENT) {
 				rv = errno;
-				break;
+				goto out;
 			}
 			DPRINTF(("Package %s not found in repo %s.\n",
 			    pkgname, rpool->rp_uri));
@@ -326,12 +326,12 @@ xbps_repository_update_pkg(const char *pkgname, prop_dictionary_t instpkg)
 			if (!prop_dictionary_get_cstring_nocopy(instpkg,
 			    "version", &instver)) {
 				rv = errno;
-				break;
+				goto out;
 			}
 			if (!prop_dictionary_get_cstring_nocopy(pkgrd,
 			    "version", &repover)) {
 				rv = errno;
-				break;
+				goto out;
 			}
 			if (xbps_cmpver(repover, instver) > 0) {
 				DPRINTF(("Found %s-%s in repo %s.\n",

lib/repository_sync_index.c

@@ -92,8 +92,7 @@ xbps_repository_sync_pkg_index(const char *uri)
 	int rv = 0;
 	bool only_sync = false;
 
-	rpidx = lrepodir = uri_fixedp = NULL;
+	tmp_metafile = rpidx = lrepodir = lrepofile = NULL;
-	metadir = tmp_metafile = lrepofile = NULL;
 
 	if (uname(&un) == -1)
 		return -1;

lib/sha256.c

@@ -295,9 +295,6 @@ SHA256_Transform(SHA256_CTX *context, const uint32_t *data)
 	context->state[5] += f;
 	context->state[6] += g;
 	context->state[7] += h;
-
-	/* Clean up */
-	a = b = c = d = e = f = g = h = T1 = T2 = 0;
 }
 
 #endif /* SHA2_UNROLL_TRANSFORM */
@@ -331,8 +328,6 @@ XBPS_SHA256_Update(SHA256_CTX *context, const uint8_t *data, size_t len)
 			/* The buffer is not yet full */
 			memcpy(&context->buffer[usedspace], data, len);
 			context->bitcount += len << 3;
-			/* Clean up: */
-			usedspace = freespace = 0;
 			return 1;
 		}
 	}
@@ -366,9 +361,6 @@ XBPS_SHA256_Update(SHA256_CTX *context, const uint8_t *data, size_t len)
 		memcpy(context->buffer, data, len);
 		context->bitcount += len << 3;
 	}
-	/* Clean up: */
-	usedspace = freespace = 0;
-
 	return 1;
 }
 
@@ -428,7 +420,6 @@ SHA224_256_Final(uint8_t digest[], SHA256_CTX *context, size_t len)
 
 	/* Clean up state data: */
 	memset(context, 0, sizeof(*context));
-	usedspace = 0;
 
 	return 1;
 }

lib/unpack.c

@@ -97,14 +97,14 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg)
 	size_t entry_idx = 0;
 	const char *pkgname, *version, *rootdir, *entry_str, *transact;
 	char *buf;
-	int rv = 0, flags, lflags;
+	int rv, flags, lflags;
-	bool preserve, actgt, skip_entry, update;
+	bool preserve, skip_entry, update;
 	bool props_plist_found, files_plist_found;
 
 	assert(ar != NULL);
 	assert(pkg != NULL);
 
-	preserve = actgt = skip_entry = update = false;
+	preserve = skip_entry = update = false;
 	props_plist_found = files_plist_found = false;
 	rootdir = xbps_get_rootdir();
 	flags = xbps_get_flags();
@@ -173,7 +173,6 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg)
 			if (buf == NULL)
 				return errno;
 
-			actgt = true;
 			archive_entry_set_pathname(entry, buf);
 			archive_entry_set_mode(entry, 0750);
 
@@ -298,7 +297,6 @@ unpack_archive_fini(struct archive *ar, prop_dictionary_t pkg)
 					    "path: %s\n",
 					    archive_entry_pathname(entry));
 				}
-				rv = 0;
 				continue;
 			}
 		}