diff --git a/lib/content_encoding.c b/lib/content_encoding.c
index da0b2f634c5f7add9e6dd2a125035a0a65126ee1..1eb4651610e4fe743265172c43145e2db8c00cd6 100644
--- a/lib/content_encoding.c
+++ b/lib/content_encoding.c
@@ -73,7 +73,7 @@ Curl_unencode_deflate_write(struct SessionHandle *data,
                             ssize_t nread)
 {
   int status;                   /* zlib status */
-  int result;                   /* Curl_client_write status */
+  int result = CURLE_OK; /*?*/  /* Curl_client_write status */
   char decomp[DSIZ];            /* Put the decompressed data here. */
   z_stream *z = &k->z;          /* zlib state structure */
 
@@ -217,7 +217,7 @@ Curl_unencode_gzip_write(struct SessionHandle *data,
                          ssize_t nread)
 {
   int status;                   /* zlib status */
-  int result;                   /* Curl_client_write status */
+  int result = CURLE_OK; /*?*/  /* Curl_client_write status */
   char decomp[DSIZ];            /* Put the decompressed data here. */
   z_stream *z = &k->z;          /* zlib state structure */
 
diff --git a/lib/ssluse.c b/lib/ssluse.c
index 95a4a1aa5211039b0d82122112d9bca7c0da7e07..f53c8dc7ef069b2a219b08a55d894bc0be0938ec 100644
--- a/lib/ssluse.c
+++ b/lib/ssluse.c
@@ -783,7 +783,7 @@ static CURLcode verifyhost(struct connectdata *conn,
   char peer_CN[257];
   bool matched = FALSE; /* no alternative match yet */
   int target = GEN_DNS; /* target type, GEN_DNS or GEN_IPADD */
-  int addrlen;
+  int addrlen = 0;
   struct SessionHandle *data = conn->data;
   STACK_OF(GENERAL_NAME) *altnames;
 #ifdef ENABLE_IPV6
@@ -809,9 +809,9 @@ static CURLcode verifyhost(struct connectdata *conn,
   altnames = X509_get_ext_d2i(server_cert, NID_subject_alt_name, NULL, NULL);
   
   if(altnames) {
-    int hostlen;
-    int domainlen;
-    char *domain;
+    int hostlen = 0;
+    int domainlen = 0;
+    char *domain = NULL;
     int numalts;
     int i;
         
diff --git a/src/main.c b/src/main.c
index fb2f8e20cdf0bc121a9352cca1abb9f10dfd4880..65d9b0acbb5421b9cc24c4435b1b3babb21be0da 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2567,7 +2567,7 @@ operate(struct Configurable *config, int argc, char *argv[])
 
   int separator = 0;
   
-  FILE *infd;
+  FILE *infd = stdin;
   bool infdfopen;
   FILE *headerfilep = NULL;
   char *urlbuffer=NULL;
diff --git a/src/urlglob.c b/src/urlglob.c
index 8b0da9c69f0aaf0d4d96141062a1b2f3f1318421..e1be1834f267b5ebddce50d838e48518f7618896 100644
--- a/src/urlglob.c
+++ b/src/urlglob.c
@@ -435,8 +435,8 @@ char *glob_match_url(char *filename, URLGlob *glob)
   int allocsize;
   int stringlen=0;
   char numbuf[18];
-  char *appendthis;
-  int appendlen;
+  char *appendthis = NULL;
+  int appendlen = 0;
 
   /* We cannot use the glob_buffer for storage here since the filename may
    * be longer than the URL we use. We allocate a good start size, then