Add -Wwrite-strings to configure

Fixes for the code included

34 files changed, 170 insertions, 166 deletions

diff --git a/configure.ac b/configure.ac
index 3af580435..cdac02c6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -308,10 +308,10 @@ dnl set location of plugin directory
 AG_GST_SET_PLUGINDIR
 
 dnl define an ERROR_CFLAGS Makefile variable
-AG_GST_SET_ERROR_CFLAGS($GST_GIT, [-Wmissing-declarations -Wmissing-prototypes -Wredundant-decls -Wundef])
+AG_GST_SET_ERROR_CFLAGS($GST_GIT, [-Wmissing-declarations -Wmissing-prototypes -Wredundant-decls -Wundef -Wwrite-strings])
 
 dnl define an ERROR_CXXFLAGS Makefile variable
-AG_GST_SET_ERROR_CXXFLAGS($GST_GIT, [-Wmissing-declarations -Wmissing-prototypes -Wredundant-decls -Wundef])
+AG_GST_SET_ERROR_CXXFLAGS($GST_GIT, [-Wmissing-declarations -Wmissing-prototypes -Wredundant-decls -Wundef -Wwrite-strings])
 
 dnl define correct level for debugging messages
 AG_GST_SET_LEVEL_DEFAULT($GST_GIT)
diff --git a/ext/libvisual/visual.c b/ext/libvisual/visual.c
index daa396ae3..ff0f9bc35 100644
--- a/ext/libvisual/visual.c
+++ b/ext/libvisual/visual.c
@@ -683,10 +683,11 @@ gst_visual_chain (GstPad * pad, GstBuffer * buffer)
 
       visual_audio_samplepool_input_channel (visual->audio->samplepool,
           lbuf,
-          rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_LEFT);
-      visual_audio_samplepool_input_channel (visual->audio->samplepool,
-          rbuf,
-          rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16, VISUAL_AUDIO_CHANNEL_RIGHT);
+          rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16,
+          (char *) VISUAL_AUDIO_CHANNEL_LEFT);
+      visual_audio_samplepool_input_channel (visual->audio->samplepool, rbuf,
+          rate, VISUAL_AUDIO_SAMPLE_FORMAT_S16,
+          (char *) VISUAL_AUDIO_CHANNEL_RIGHT);
 
       visual_object_unref (VISUAL_OBJECT (lbuf));
       visual_object_unref (VISUAL_OBJECT (rbuf));
diff --git a/ext/theora/gsttheoraenc.c b/ext/theora/gsttheoraenc.c
index 26c5ea350..959456290 100644
--- a/ext/theora/gsttheoraenc.c
+++ b/ext/theora/gsttheoraenc.c
@@ -433,7 +433,7 @@ theora_enc_get_supported_formats (void)
   struct
   {
     th_pixel_fmt pixelformat;
-    char *fourcc;
+    const char *fourcc;
   } formats[] = {
     {
     TH_PF_420, "I420"}, {
diff --git a/gst-libs/gst/app/gstappsink.c b/gst-libs/gst/app/gstappsink.c
index 14519fe34..1129388fa 100644
--- a/gst-libs/gst/app/gstappsink.c
+++ b/gst-libs/gst/app/gstappsink.c
@@ -1345,7 +1345,7 @@ gst_app_sink_uri_get_type (void)
 static gchar **
 gst_app_sink_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "appsink", NULL };
+  static gchar *protocols[] = { (char *) "appsink", NULL };
 
   return protocols;
 }
diff --git a/gst-libs/gst/app/gstappsrc.c b/gst-libs/gst/app/gstappsrc.c
index 98f1ef26d..9b8d21d8c 100644
--- a/gst-libs/gst/app/gstappsrc.c
+++ b/gst-libs/gst/app/gstappsrc.c
@@ -1639,7 +1639,7 @@ gst_app_src_uri_get_type (void)
 static gchar **
 gst_app_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "appsrc", NULL };
+  static gchar *protocols[] = { (char *) "appsrc", NULL };
 
   return protocols;
 }
diff --git a/gst-libs/gst/cdda/gstcddabasesrc.c b/gst-libs/gst/cdda/gstcddabasesrc.c
index 0a0d53d15..e753a567f 100644
--- a/gst-libs/gst/cdda/gstcddabasesrc.c
+++ b/gst-libs/gst/cdda/gstcddabasesrc.c
@@ -922,7 +922,7 @@ gst_cdda_base_src_uri_get_type (void)
 static gchar **
 gst_cdda_base_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "cdda", NULL };
+  static gchar *protocols[] = { (char *) "cdda", NULL };
 
   return protocols;
 }
diff --git a/gst-libs/gst/interfaces/mixer.c b/gst-libs/gst/interfaces/mixer.c
index 57907c03c..8117d2081 100644
--- a/gst-libs/gst/interfaces/mixer.c
+++ b/gst-libs/gst/interfaces/mixer.c
@@ -514,7 +514,7 @@ gst_mixer_volume_changed (GstMixer * mixer,
  */
 void
 gst_mixer_option_changed (GstMixer * mixer,
-    GstMixerOptions * opts, gchar * value)
+    GstMixerOptions * opts, const gchar * value)
 {
   GstStructure *s;
   GstMessage *m;
diff --git a/gst-libs/gst/interfaces/mixer.h b/gst-libs/gst/interfaces/mixer.h
index ce580636d..ae3e83028 100644
--- a/gst-libs/gst/interfaces/mixer.h
+++ b/gst-libs/gst/interfaces/mixer.h
@@ -197,7 +197,7 @@ void            gst_mixer_volume_changed (GstMixer      *mixer,
                                           gint          *volumes);
 void            gst_mixer_option_changed (GstMixer      *mixer,
                                           GstMixerOptions *opts,
-                                          gchar         *value);
+                                          const gchar   *value);
 
 void            gst_mixer_mixer_changed   (GstMixer        *mixer);
 
diff --git a/gst-libs/gst/rtsp/gstrtspdefs.c b/gst-libs/gst/rtsp/gstrtspdefs.c
index 09de33b86..844c114d8 100644
--- a/gst-libs/gst/rtsp/gstrtspdefs.c
+++ b/gst-libs/gst/rtsp/gstrtspdefs.c
@@ -208,7 +208,7 @@ static struct rtsp_header rtsp_headers[] = {
 };
 
 #define DEF_STATUS(c, t) \
-  g_hash_table_insert (statuses, GUINT_TO_POINTER(c), t)
+  g_hash_table_insert (statuses, GUINT_TO_POINTER(c), (gpointer) t)
 
 static GHashTable *
 rtsp_init_status (void)
diff --git a/gst-libs/gst/rtsp/gstrtspurl.c b/gst-libs/gst/rtsp/gstrtspurl.c
index 98f1ac24b..06d2100d5 100644
--- a/gst-libs/gst/rtsp/gstrtspurl.c
+++ b/gst-libs/gst/rtsp/gstrtspurl.c
@@ -329,10 +329,10 @@ gchar *
 gst_rtsp_url_get_request_uri (const GstRTSPUrl * url)
 {
   gchar *uri;
-  gchar *pre_host;
-  gchar *post_host;
-  gchar *pre_query;
-  gchar *query;
+  const gchar *pre_host;
+  const gchar *post_host;
+  const gchar *pre_query;
+  const gchar *query;
 
   g_return_val_if_fail (url != NULL, NULL);
 
diff --git a/gst-libs/gst/tag/tags.c b/gst-libs/gst/tag/tags.c
index 448c698c8..46c1a1520 100644
--- a/gst-libs/gst/tag/tags.c
+++ b/gst-libs/gst/tag/tags.c
@@ -291,7 +291,7 @@ gst_tag_freeform_string_to_utf8 (const gchar * data, gint size,
 
   /* check for and use byte-order-mark for UTF-16/32 cases */
   if (size >= 2) {
-    gchar *c = NULL;
+    const gchar *c = NULL;
     gint prefix, ssize;
 
     if (size >= 4) {
diff --git a/gst/playback/gstplaybasebin.c b/gst/playback/gstplaybasebin.c
index d7dbf2b73..2d0c69a69 100644
--- a/gst/playback/gstplaybasebin.c
+++ b/gst/playback/gstplaybasebin.c
@@ -537,7 +537,7 @@ check_queue_event (GstPad * pad, GstEvent * event, gpointer user_data)
   switch (GST_EVENT_TYPE (event)) {
     case GST_EVENT_EOS:
       GST_DEBUG ("EOS event, mark EOS");
-      g_object_set_data (G_OBJECT (queue), "eos", "1");
+      g_object_set_data (G_OBJECT (queue), "eos", GINT_TO_POINTER (1));
       break;
     case GST_EVENT_FLUSH_STOP:
       GST_DEBUG ("FLUSH_STOP event, remove EOS");
@@ -656,7 +656,6 @@ static void
 queue_threshold_reached (GstElement * queue, GstPlayBaseBin * play_base_bin)
 {
   GstPlayBaseGroup *group;
-  gpointer data;
   gint n;
 
   GST_DEBUG_OBJECT (play_base_bin, "running signal received from queue %s",
@@ -666,8 +665,7 @@ queue_threshold_reached (GstElement * queue, GstPlayBaseBin * play_base_bin)
   g_signal_handlers_disconnect_by_func (queue,
       (gpointer) queue_threshold_reached, play_base_bin);
 
-  data = g_object_get_data (G_OBJECT (queue), "eos");
-  if (data) {
+  if (g_object_get_data (G_OBJECT (queue), "eos")) {
     GST_DEBUG_OBJECT (play_base_bin, "disable min threshold time, we are EOS");
     g_object_set (queue, "min-threshold-time", (guint64) 0, NULL);
   } else {
@@ -2008,7 +2006,7 @@ make_decoder (GstPlayBaseBin * play_base_bin)
       G_CALLBACK (no_more_pads), play_base_bin);
   g_signal_connect (G_OBJECT (decoder),
       "unknown-type", G_CALLBACK (unknown_type), play_base_bin);
-  g_object_set_data (G_OBJECT (decoder), "pending", "1");
+  g_object_set_data (G_OBJECT (decoder), "pending", GINT_TO_POINTER (1));
   play_base_bin->pending++;
 
   GST_DEBUG_OBJECT (play_base_bin, "created decodebin, %d pending",
@@ -2119,7 +2117,7 @@ setup_source (GstPlayBaseBin * play_base_bin)
         G_CALLBACK (sub_no_more_pads), play_base_bin);
     g_signal_connect (G_OBJECT (db), "unknown-type",
         G_CALLBACK (unknown_type), play_base_bin);
-    g_object_set_data (G_OBJECT (db), "pending", "1");
+    g_object_set_data (G_OBJECT (db), "pending", GINT_TO_POINTER (1));
     play_base_bin->pending++;
 
     GST_DEBUG_OBJECT (play_base_bin, "we have subtitles, %d pending",
@@ -2209,7 +2207,8 @@ setup_source (GstPlayBaseBin * play_base_bin)
     play_base_bin->src_nmp_sig_id =
         g_signal_connect (G_OBJECT (play_base_bin->source), "no-more-pads",
         G_CALLBACK (source_no_more_pads), play_base_bin);
-    g_object_set_data (G_OBJECT (play_base_bin->source), "pending", "1");
+    g_object_set_data (G_OBJECT (play_base_bin->source), "pending",
+        GINT_TO_POINTER (1));
     play_base_bin->pending++;
     GST_DEBUG_OBJECT (play_base_bin,
         "Source has dynamic output pads, %d pending", play_base_bin->pending);
diff --git a/gst/playback/gstplaybin.c b/gst/playback/gstplaybin.c
index a62dc8249..c36d265a0 100644
--- a/gst/playback/gstplaybin.c
+++ b/gst/playback/gstplaybin.c
@@ -837,7 +837,7 @@ gen_video_element (GstPlayBin * play_bin)
       goto no_sinks;
   }
   gst_object_ref (sink);
-  g_hash_table_insert (play_bin->cache, "video_sink", sink);
+  g_hash_table_insert (play_bin->cache, (gpointer) "video_sink", sink);
 
   /* create a bin to hold objects, as we create them we add them to this bin so
    * that when something goes wrong we only need to unref the bin */
@@ -875,7 +875,7 @@ gen_video_element (GstPlayBin * play_bin)
   /* since we're gonna add it to a bin but don't want to lose it,
    * we keep a reference. */
   gst_object_ref (element);
-  g_hash_table_insert (play_bin->cache, "vbin", element);
+  g_hash_table_insert (play_bin->cache, (gpointer) "vbin", element);
 
   return element;
 
@@ -1106,7 +1106,7 @@ gen_audio_element (GstPlayBin * play_bin)
   }
 
   gst_object_ref (sink);
-  g_hash_table_insert (play_bin->cache, "audio_sink", sink);
+  g_hash_table_insert (play_bin->cache, (gpointer) "audio_sink", sink);
 
   element = gst_bin_new ("abin");
   gst_bin_add (GST_BIN_CAST (element), sink);
@@ -1143,7 +1143,7 @@ gen_audio_element (GstPlayBin * play_bin)
   /* since we're gonna add it to a bin but don't want to lose it,
    * we keep a reference. */
   gst_object_ref (element);
-  g_hash_table_insert (play_bin->cache, "abin", element);
+  g_hash_table_insert (play_bin->cache, (gpointer) "abin", element);
 
   return element;
 
diff --git a/gst/playback/gstplaybin2.c b/gst/playback/gstplaybin2.c
index 2d1ee4b37..7c123d831 100644
--- a/gst/playback/gstplaybin2.c
+++ b/gst/playback/gstplaybin2.c
@@ -2221,7 +2221,7 @@ static void
 selector_active_pad_changed (GObject * selector, GParamSpec * pspec,
     GstPlayBin * playbin)
 {
-  gchar *property;
+  const gchar *property;
   GstSourceGroup *group;
   GstSourceSelect *select = NULL;
   int i;
diff --git a/gst/playback/gsturidecodebin.c b/gst/playback/gsturidecodebin.c
index 96dc57b17..24ad7b013 100644
--- a/gst/playback/gsturidecodebin.c
+++ b/gst/playback/gsturidecodebin.c
@@ -1382,7 +1382,7 @@ make_decoder (GstURIDecodeBin * decoder)
     }
   }
 
-  g_object_set_data (G_OBJECT (decodebin), "pending", "1");
+  g_object_set_data (G_OBJECT (decodebin), "pending", GINT_TO_POINTER (1));
   g_object_set (decodebin, "subtitle-encoding", decoder->encoding, NULL);
   decoder->pending++;
   GST_LOG_OBJECT (decoder, "have %d pending dynamic objects", decoder->pending);
@@ -1702,7 +1702,8 @@ setup_source (GstURIDecodeBin * decoder)
     decoder->src_nmp_sig_id =
         g_signal_connect (decoder->source, "no-more-pads",
         G_CALLBACK (source_no_more_pads), decoder);
-    g_object_set_data (G_OBJECT (decoder->source), "pending", "1");
+    g_object_set_data (G_OBJECT (decoder->source), "pending",
+        GINT_TO_POINTER (1));
     decoder->pending++;
   } else {
     if (decoder->is_stream) {
diff --git a/gst/subparse/gstsubparse.c b/gst/subparse/gstsubparse.c
index 460ee66c3..750a391d5 100644
--- a/gst/subparse/gstsubparse.c
+++ b/gst/subparse/gstsubparse.c
@@ -410,7 +410,7 @@ gst_sub_parse_get_property (GObject * object, guint prop_id,
   GST_OBJECT_UNLOCK (subparse);
 }
 
-static gchar *
+static const gchar *
 gst_sub_parse_get_format_description (GstSubParseFormat format)
 {
   switch (format) {
@@ -446,9 +446,10 @@ gst_convert_to_utf8 (const gchar * str, gsize len, const gchar * encoding,
   gchar *ret = NULL;
 
   *consumed = 0;
+  /* The char cast is necessary in glib < 2.24 */
   ret =
-      g_convert_with_fallback (str, len, "UTF-8", encoding, "*", consumed, NULL,
-      err);
+      g_convert_with_fallback (str, len, "UTF-8", encoding, (char *) "*",
+      consumed, NULL, err);
   if (ret == NULL)
     return ret;
 
@@ -1858,14 +1859,13 @@ gst_subparse_type_find (GstTypeFind * tf, gpointer private)
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-  static gchar *sub_exts[] = { "srt", "sub", "mpsub", "mdvd", "smi", "txt",
-    "dks", NULL
-  };
+  static const gchar *sub_exts[] =
+      { "srt", "sub", "mpsub", "mdvd", "smi", "txt", "dks", NULL };
 
   GST_DEBUG_CATEGORY_INIT (sub_parse_debug, "subparse", 0, ".sub parser");
 
   if (!gst_type_find_register (plugin, "subparse_typefind", GST_RANK_MARGINAL,
-          gst_subparse_type_find, sub_exts, SUB_CAPS, NULL, NULL))
+          gst_subparse_type_find, (gchar **) sub_exts, SUB_CAPS, NULL, NULL))
     return FALSE;
 
   if (!gst_element_register (plugin, "subparse",
diff --git a/gst/subparse/samiparse.c b/gst/subparse/samiparse.c
index 955ee4c41..135748aaf 100644
--- a/gst/subparse/samiparse.c
+++ b/gst/subparse/samiparse.c
@@ -166,7 +166,7 @@ handle_start_font (GstSamiContext * sctx, const xmlChar ** atts)
          * sami files.
          * It will fix hex color value that start without '#'
          */
-        gchar *sharp = "";
+        const gchar *sharp = "";
         int len = xmlStrlen (value);
 
         if (!(*value == '#' && len == 7)) {
diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c
index 46b571a1d..fecf7bf43 100644
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@@ -3504,7 +3504,7 @@ G_BEGIN_DECLS{                                                          \
   sw_data->probability = _probability;                                  \
   sw_data->caps = gst_caps_new_simple (name, NULL);                     \
   if (!gst_type_find_register (plugin, name, rank, start_with_type_find,\
-                      ext, sw_data->caps, sw_data,                      \
+                      (char **) ext, sw_data->caps, sw_data,            \
                      (GDestroyNotify) (sw_data_destroy))) {             \
     gst_caps_unref (sw_data->caps);                                     \
     g_free (sw_data);                                                   \
@@ -3534,7 +3534,7 @@ G_BEGIN_DECLS{                                                          \
   sw_data->probability = GST_TYPE_FIND_MAXIMUM;                         \
   sw_data->caps = gst_caps_new_simple (name, NULL);                     \
   if (!gst_type_find_register (plugin, name, rank, riff_type_find,      \
-                      ext, sw_data->caps, sw_data,                      \
+                      (char **) ext, sw_data->caps, sw_data,            \
                       (GDestroyNotify) (sw_data_destroy))) {            \
     gst_caps_unref (sw_data->caps);                                     \
     g_free (sw_data);                                                   \
@@ -3546,7 +3546,7 @@ G_BEGIN_DECLS{                                                          \
 
 #define TYPE_FIND_REGISTER(plugin,name,rank,func,ext,caps,priv,notify) \
 G_BEGIN_DECLS{\
-  if (!gst_type_find_register (plugin, name, rank, func, ext, caps, priv, notify))\
+  if (!gst_type_find_register (plugin, name, rank, func, (char **) ext, caps, priv, notify))\
     return FALSE; \
 }G_END_DECLS
 
@@ -3561,107 +3561,107 @@ plugin_init (GstPlugin * plugin)
      this requires gstreamer/gst/gsttypefind::gst_type_find_register()
      to have define the parameter as const
    */
-  static gchar *asf_exts[] = { "asf", "wm", "wma", "wmv", NULL };
-  static gchar *au_exts[] = { "au", "snd", NULL };
-  static gchar *avi_exts[] = { "avi", NULL };
-  static gchar *qcp_exts[] = { "qcp", NULL };
-  static gchar *cdxa_exts[] = { "dat", NULL };
-  static gchar *flac_exts[] = { "flac", NULL };
-  static gchar *flx_exts[] = { "flc", "fli", NULL };
-  static gchar *id3_exts[] =
+  static const gchar *asf_exts[] = { "asf", "wm", "wma", "wmv", NULL };
+  static const gchar *au_exts[] = { "au", "snd", NULL };
+  static const gchar *avi_exts[] = { "avi", NULL };
+  static const gchar *qcp_exts[] = { "qcp", NULL };
+  static const gchar *cdxa_exts[] = { "dat", NULL };
+  static const gchar *flac_exts[] = { "flac", NULL };
+  static const gchar *flx_exts[] = { "flc", "fli", NULL };
+  static const gchar *id3_exts[] =
       { "mp3", "mp2", "mp1", "mpga", "ogg", "flac", "tta", NULL };
-  static gchar *apetag_exts[] = { "ape", "mpc", "wv", NULL };   /* and mp3 and wav? */
-  static gchar *tta_exts[] = { "tta", NULL };
-  static gchar *mod_exts[] = { "669", "amf", "dsm", "gdm", "far", "imf",
+  static const gchar *apetag_exts[] = { "ape", "mpc", "wv", NULL };     /* and mp3 and wav? */
+  static const gchar *tta_exts[] = { "tta", NULL };
+  static const gchar *mod_exts[] = { "669", "amf", "dsm", "gdm", "far", "imf",
     "it", "med", "mod", "mtm", "okt", "sam",
     "s3m", "stm", "stx", "ult", "xm", NULL
   };
-  static gchar *mp3_exts[] = { "mp3", "mp2", "mp1", "mpga", NULL };
-  static gchar *ac3_exts[] = { "ac3", NULL };
-  static gchar *gsm_exts[] = { "gsm", NULL };
-  static gchar *musepack_exts[] = { "mpc", "mpp", "mp+", NULL };
-  static gchar *mpeg_sys_exts[] = { "mpe", "mpeg", "mpg", NULL };
-  static gchar *mpeg_video_exts[] = { "mpv", "mpeg", "mpg", NULL };
-  static gchar *mpeg_ts_exts[] = { "ts", NULL };
-  static gchar *ogg_exts[] = { "anx", "ogg", "ogm", NULL };
-  static gchar *qt_exts[] = { "mov", NULL };
-  static gchar *qtif_exts[] = { "qif", "qtif", "qti", NULL };
-  static gchar *mj2_exts[] = { "mj2", NULL };
-  static gchar *jp2_exts[] = { "jp2", NULL };
-  static gchar *rm_exts[] = { "ra", "ram", "rm", "rmvb", NULL };
-  static gchar *swf_exts[] = { "swf", "swfl", NULL };
-  static gchar *utf8_exts[] = { "txt", NULL };
-  static gchar *wav_exts[] = { "wav", NULL };
-  static gchar *aiff_exts[] = { "aiff", "aif", "aifc", NULL };
-  static gchar *svx_exts[] = { "iff", "svx", NULL };
-  static gchar *paris_exts[] = { "paf", NULL };
-  static gchar *nist_exts[] = { "nist", NULL };
-  static gchar *voc_exts[] = { "voc", NULL };
-  static gchar *sds_exts[] = { "sds", NULL };
-  static gchar *ircam_exts[] = { "sf", NULL };
-  static gchar *w64_exts[] = { "w64", NULL };
-  static gchar *shn_exts[] = { "shn", NULL };
-  static gchar *ape_exts[] = { "ape", NULL };
-  static gchar *uri_exts[] = { "ram", NULL };
-  static gchar *sdp_exts[] = { "sdp", NULL };
-  static gchar *smil_exts[] = { "smil", NULL };
-  static gchar *html_exts[] = { "htm", "html", NULL };
-  static gchar *xml_exts[] = { "xml", NULL };
-  static gchar *jpeg_exts[] = { "jpg", "jpe", "jpeg", NULL };
-  static gchar *gif_exts[] = { "gif", NULL };
-  static gchar *png_exts[] = { "png", NULL };
-  static gchar *bmp_exts[] = { "bmp", NULL };
-  static gchar *tiff_exts[] = { "tif", "tiff", NULL };
-  static gchar *matroska_exts[] = { "mkv", "mka", NULL };
-  static gchar *mve_exts[] = { "mve", NULL };
-  static gchar *dv_exts[] = { "dv", "dif", NULL };
-  static gchar *amr_exts[] = { "amr", NULL };
-  static gchar *ilbc_exts[] = { "ilbc", NULL };
-  static gchar *sid_exts[] = { "sid", NULL };
-  static gchar *xcf_exts[] = { "xcf", NULL };
-  static gchar *mng_exts[] = { "mng", NULL };
-  static gchar *jng_exts[] = { "jng", NULL };
-  static gchar *xpm_exts[] = { "xpm", NULL };
-  static gchar *pnm_exts[] = { "pnm", "ppm", "pgm", "pbm", NULL };
-  static gchar *ras_exts[] = { "ras", NULL };
-  static gchar *bz2_exts[] = { "bz2", NULL };
-  static gchar *gz_exts[] = { "gz", NULL };
-  static gchar *zip_exts[] = { "zip", NULL };
-  static gchar *compress_exts[] = { "Z", NULL };
-  static gchar *m4a_exts[] = { "m4a", NULL };
-  static gchar *q3gp_exts[] = { "3gp", NULL };
-  static gchar *aac_exts[] = { "aac", NULL };
-  static gchar *spc_exts[] = { "spc", NULL };
-  static gchar *wavpack_exts[] = { "wv", "wvp", NULL };
-  static gchar *wavpack_correction_exts[] = { "wvc", NULL };
-  static gchar *rar_exts[] = { "rar", NULL };
-  static gchar *tar_exts[] = { "tar", NULL };
-  static gchar *ar_exts[] = { "a", NULL };
-  static gchar *msdos_exts[] = { "dll", "exe", "ocx", "sys", "scr",
+  static const gchar *mp3_exts[] = { "mp3", "mp2", "mp1", "mpga", NULL };
+  static const gchar *ac3_exts[] = { "ac3", NULL };
+  static const gchar *gsm_exts[] = { "gsm", NULL };
+  static const gchar *musepack_exts[] = { "mpc", "mpp", "mp+", NULL };
+  static const gchar *mpeg_sys_exts[] = { "mpe", "mpeg", "mpg", NULL };
+  static const gchar *mpeg_video_exts[] = { "mpv", "mpeg", "mpg", NULL };
+  static const gchar *mpeg_ts_exts[] = { "ts", NULL };
+  static const gchar *ogg_exts[] = { "anx", "ogg", "ogm", NULL };
+  static const gchar *qt_exts[] = { "mov", NULL };
+  static const gchar *qtif_exts[] = { "qif", "qtif", "qti", NULL };
+  static const gchar *mj2_exts[] = { "mj2", NULL };
+  static const gchar *jp2_exts[] = { "jp2", NULL };
+  static const gchar *rm_exts[] = { "ra", "ram", "rm", "rmvb", NULL };
+  static const gchar *swf_exts[] = { "swf", "swfl", NULL };
+  static const gchar *utf8_exts[] = { "txt", NULL };
+  static const gchar *wav_exts[] = { "wav", NULL };
+  static const gchar *aiff_exts[] = { "aiff", "aif", "aifc", NULL };
+  static const gchar *svx_exts[] = { "iff", "svx", NULL };
+  static const gchar *paris_exts[] = { "paf", NULL };
+  static const gchar *nist_exts[] = { "nist", NULL };
+  static const gchar *voc_exts[] = { "voc", NULL };
+  static const gchar *sds_exts[] = { "sds", NULL };
+  static const gchar *ircam_exts[] = { "sf", NULL };
+  static const gchar *w64_exts[] = { "w64", NULL };
+  static const gchar *shn_exts[] = { "shn", NULL };
+  static const gchar *ape_exts[] = { "ape", NULL };
+  static const gchar *uri_exts[] = { "ram", NULL };
+  static const gchar *sdp_exts[] = { "sdp", NULL };
+  static const gchar *smil_exts[] = { "smil", NULL };
+  static const gchar *html_exts[] = { "htm", "html", NULL };
+  static const gchar *xml_exts[] = { "xml", NULL };
+  static const gchar *jpeg_exts[] = { "jpg", "jpe", "jpeg", NULL };
+  static const gchar *gif_exts[] = { "gif", NULL };
+  static const gchar *png_exts[] = { "png", NULL };
+  static const gchar *bmp_exts[] = { "bmp", NULL };
+  static const gchar *tiff_exts[] = { "tif", "tiff", NULL };
+  static const gchar *matroska_exts[] = { "mkv", "mka", NULL };
+  static const gchar *mve_exts[] = { "mve", NULL };
+  static const gchar *dv_exts[] = { "dv", "dif", NULL };
+  static const gchar *amr_exts[] = { "amr", NULL };
+  static const gchar *ilbc_exts[] = { "ilbc", NULL };
+  static const gchar *sid_exts[] = { "sid", NULL };
+  static const gchar *xcf_exts[] = { "xcf", NULL };
+  static const gchar *mng_exts[] = { "mng", NULL };
+  static const gchar *jng_exts[] = { "jng", NULL };
+  static const gchar *xpm_exts[] = { "xpm", NULL };
+  static const gchar *pnm_exts[] = { "pnm", "ppm", "pgm", "pbm", NULL };
+  static const gchar *ras_exts[] = { "ras", NULL };
+  static const gchar *bz2_exts[] = { "bz2", NULL };
+  static const gchar *gz_exts[] = { "gz", NULL };
+  static const gchar *zip_exts[] = { "zip", NULL };
+  static const gchar *compress_exts[] = { "Z", NULL };
+  static const gchar *m4a_exts[] = { "m4a", NULL };
+  static const gchar *q3gp_exts[] = { "3gp", NULL };
+  static const gchar *aac_exts[] = { "aac", NULL };
+  static const gchar *spc_exts[] = { "spc", NULL };
+  static const gchar *wavpack_exts[] = { "wv", "wvp", NULL };
+  static const gchar *wavpack_correction_exts[] = { "wvc", NULL };
+  static const gchar *rar_exts[] = { "rar", NULL };
+  static const gchar *tar_exts[] = { "tar", NULL };
+  static const gchar *ar_exts[] = { "a", NULL };
+  static const gchar *msdos_exts[] = { "dll", "exe", "ocx", "sys", "scr",
     "msstyles", "cpl", NULL
   };
-  static gchar *flv_exts[] = { "flv", NULL };
-  static gchar *m4v_exts[] = { "m4v", NULL };
-  static gchar *h264_exts[] = { "h264", "x264", "264", NULL };
-  static gchar *nuv_exts[] = { "nuv", NULL };
-  static gchar *vivo_exts[] = { "viv", NULL };
-  static gchar *nsf_exts[] = { "nsf", NULL };
-  static gchar *gym_exts[] = { "gym", NULL };
-  static gchar *ay_exts[] = { "ay", NULL };
-  static gchar *gbs_exts[] = { "gbs", NULL };
-  static gchar *kss_exts[] = { "kss", NULL };
-  static gchar *sap_exts[] = { "sap", NULL };
-  static gchar *vgm_exts[] = { "vgm", NULL };
-  static gchar *mid_exts[] = { "mid", "midi", NULL };
-  static gchar *mxmf_exts[] = { "mxmf", NULL };
-  static gchar *imelody_exts[] = { "imy", "ime", "imelody", NULL };
-  static gchar *pdf_exts[] = { "pdf", NULL };
-  static gchar *ps_exts[] = { "ps", NULL };
-  static gchar *svg_exts[] = { "svg", NULL };
-  static gchar *mxf_exts[] = { "mxf", NULL };
-  static gchar *msword_exts[] = { "doc", NULL };
-  static gchar *dsstore_exts[] = { "DS_Store", NULL };
-  static gchar *psd_exts[] = { "psd", NULL };
+  static const gchar *flv_exts[] = { "flv", NULL };
+  static const gchar *m4v_exts[] = { "m4v", NULL };
+  static const gchar *h264_exts[] = { "h264", "x264", "264", NULL };
+  static const gchar *nuv_exts[] = { "nuv", NULL };
+  static const gchar *vivo_exts[] = { "viv", NULL };
+  static const gchar *nsf_exts[] = { "nsf", NULL };
+  static const gchar *gym_exts[] = { "gym", NULL };
+  static const gchar *ay_exts[] = { "ay", NULL };
+  static const gchar *gbs_exts[] = { "gbs", NULL };
+  static const gchar *kss_exts[] = { "kss", NULL };
+  static const gchar *sap_exts[] = { "sap", NULL };
+  static const gchar *vgm_exts[] = { "vgm", NULL };
+  static const gchar *mid_exts[] = { "mid", "midi", NULL };
+  static const gchar *mxmf_exts[] = { "mxmf", NULL };
+  static const gchar *imelody_exts[] = { "imy", "ime", "imelody", NULL };
+  static const gchar *pdf_exts[] = { "pdf", NULL };
+  static const gchar *ps_exts[] = { "ps", NULL };
+  static const gchar *svg_exts[] = { "svg", NULL };
+  static const gchar *mxf_exts[] = { "mxf", NULL };
+  static const gchar *msword_exts[] = { "doc", NULL };
+  static const gchar *dsstore_exts[] = { "DS_Store", NULL };
+  static const gchar *psd_exts[] = { "psd", NULL };
 
   GST_DEBUG_CATEGORY_INIT (type_find_debug, "typefindfunctions",
       GST_DEBUG_FG_GREEN | GST_DEBUG_BG_RED, "generic type find functions");
diff --git a/gst/videotestsrc/videotestsrc.c b/gst/videotestsrc/videotestsrc.c
index bf81d4f21..3e40c9fab 100644
--- a/gst/videotestsrc/videotestsrc.c
+++ b/gst/videotestsrc/videotestsrc.c
@@ -528,7 +528,7 @@ paintinfo_find_by_structure (const GstStructure * structure)
       }
     }
   } else if (strcmp (media_type, "video/x-raw-yuv") == 0) {
-    char *s;
+    const char *s;
     int fourcc;
     guint32 format;
 
@@ -600,7 +600,7 @@ paintrect_find_fourcc (int find_fourcc)
   int i;
 
   for (i = 0; i < n_fourccs; i++) {
-    char *s;
+    const char *s;
     int fourcc;
 
     s = fourcc_list[i].fourcc;
diff --git a/gst/videotestsrc/videotestsrc.h b/gst/videotestsrc/videotestsrc.h
index 4b988ac5b..3bc4a17de 100644
--- a/gst/videotestsrc/videotestsrc.h
+++ b/gst/videotestsrc/videotestsrc.h
@@ -65,8 +65,8 @@ struct paintinfo_struct
 struct fourcc_list_struct
 {
   int type;
-  char *fourcc;
-  char *name;
+  const char *fourcc;
+  const char *name;
   int bitspp;
   void (*paint_setup) (paintinfo * p, unsigned char *dest);
   void (*paint_hline) (paintinfo * p, int x, int y, int w);
diff --git a/gst/volume/gstvolume.c b/gst/volume/gstvolume.c
index 2cf24274a..3ac6abafa 100644
--- a/gst/volume/gstvolume.c
+++ b/gst/volume/gstvolume.c
@@ -932,7 +932,8 @@ volume_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
     }
 
     if (mute_csource) {
-      GstValueArray va = { "mute", nsamples, interval, (gpointer) self->mutes };
+      GstValueArray va =
+          { (char *) "mute", nsamples, interval, (gpointer) self->mutes };
 
       if (!gst_control_source_get_value_array (mute_csource, ts, &va))
         goto controller_failure;
@@ -947,7 +948,7 @@ volume_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
 
     if (volume_csource) {
       GstValueArray va =
-          { "volume", nsamples, interval, (gpointer) self->volumes };
+          { (char *) "volume", nsamples, interval, (gpointer) self->volumes };
 
       if (!gst_control_source_get_value_array (volume_csource, ts, &va))
         goto controller_failure;
diff --git a/sys/v4l/gstv4lelement.c b/sys/v4l/gstv4lelement.c
index 27fae757a..91776af75 100644
--- a/sys/v4l/gstv4lelement.c
+++ b/sys/v4l/gstv4lelement.c
@@ -179,7 +179,7 @@ static gboolean
 gst_v4l_class_probe_devices (GstV4lElementClass * klass, gboolean check)
 {
   if (!check) {
-    gchar *dev_base[] = { "/dev/video", "/dev/v4l/video", NULL };
+    const gchar *dev_base[] = { "/dev/video", "/dev/v4l/video", NULL };
     gint base, n, fd;
 
     while (devices) {
diff --git a/sys/xvimage/xvimagesink.c b/sys/xvimage/xvimagesink.c
index 5591ec035..85841074d 100644
--- a/sys/xvimage/xvimagesink.c
+++ b/sys/xvimage/xvimagesink.c
@@ -1766,7 +1766,7 @@ gst_xvimagesink_xcontext_get (GstXvImageSink * xvimagesink)
   gint nb_formats = 0, i, j, N_attr;
   XvAttribute *xv_attr;
   Atom prop_atom;
-  char *channels[4] = { "XV_HUE", "XV_SATURATION",
+  const char *channels[4] = { "XV_HUE", "XV_SATURATION",
     "XV_BRIGHTNESS", "XV_CONTRAST"
   };
 
diff --git a/tests/check/elements/audioconvert.c b/tests/check/elements/audioconvert.c
index 2092d9d1f..b5e292d56 100644
--- a/tests/check/elements/audioconvert.c
+++ b/tests/check/elements/audioconvert.c
@@ -119,7 +119,7 @@ cleanup_audioconvert (GstElement * audioconvert)
 
 /* returns a newly allocated caps */
 static GstCaps *
-get_int_caps (guint channels, gchar * endianness, guint width,
+get_int_caps (guint channels, const gchar * endianness, guint width,
     guint depth, gboolean signedness)
 {
   GstCaps *caps;
@@ -143,7 +143,7 @@ get_int_caps (guint channels, gchar * endianness, guint width,
 
 /* returns a newly allocated caps */
 static GstCaps *
-get_float_caps (guint channels, gchar * endianness, guint width)
+get_float_caps (guint channels, const gchar * endianness, guint width)
 {
   GstCaps *caps;
   gchar *string;
@@ -395,7 +395,7 @@ set_channel_positions (GstCaps * caps, int channels,
  * ones. Only implemented for channels between 1 and 6.
  */
 static GstCaps *
-get_float_mc_caps (guint channels, gchar * endianness, guint width,
+get_float_mc_caps (guint channels, const gchar * endianness, guint width,
     gboolean mixed_up_layout)
 {
   GstCaps *caps = get_float_caps (channels, endianness, width);
@@ -411,7 +411,7 @@ get_float_mc_caps (guint channels, gchar * endianness, guint width,
 }
 
 static GstCaps *
-get_int_mc_caps (guint channels, gchar * endianness, guint width,
+get_int_mc_caps (guint channels, const gchar * endianness, guint width,
     guint depth, gboolean signedness, gboolean mixed_up_layout)
 {
   GstCaps *caps = get_int_caps (channels, endianness, width, depth, signedness);
diff --git a/tests/check/elements/gdpdepay.c b/tests/check/elements/gdpdepay.c
index 60bc1aed1..811d9cdf0 100644
--- a/tests/check/elements/gdpdepay.c
+++ b/tests/check/elements/gdpdepay.c
@@ -94,7 +94,7 @@ cleanup_gdpdepay (GstElement * gdpdepay)
 }
 
 static void
-gdpdepay_push_per_byte (gchar * reason, guint8 * bytes, guint length)
+gdpdepay_push_per_byte (const gchar * reason, guint8 * bytes, guint length)
 {
   int i;
   GstBuffer *inbuffer;
diff --git a/tests/check/elements/playbin.c b/tests/check/elements/playbin.c
index befd605f5..08aace609 100644
--- a/tests/check/elements/playbin.c
+++ b/tests/check/elements/playbin.c
@@ -406,7 +406,7 @@ gst_red_video_src_uri_get_type (void)
 static gchar **
 gst_red_video_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "redvideo", NULL };
+  static gchar *protocols[] = { (char *) "redvideo", NULL };
 
   return protocols;
 }
@@ -515,7 +515,7 @@ gst_codec_src_uri_get_type (void)
 static gchar **
 gst_codec_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "codec", NULL };
+  static gchar *protocols[] = { (char *) "codec", NULL };
 
   return protocols;
 }
diff --git a/tests/check/elements/playbin2.c b/tests/check/elements/playbin2.c
index 75679eebf..c7281dd5f 100644
--- a/tests/check/elements/playbin2.c
+++ b/tests/check/elements/playbin2.c
@@ -475,7 +475,7 @@ gst_red_video_src_uri_get_type (void)
 static gchar **
 gst_red_video_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "redvideo", NULL };
+  static gchar *protocols[] = { (char *) "redvideo", NULL };
 
   return protocols;
 }
@@ -584,7 +584,7 @@ gst_codec_src_uri_get_type (void)
 static gchar **
 gst_codec_src_uri_get_protocols (void)
 {
-  static gchar *protocols[] = { "codec", NULL };
+  static gchar *protocols[] = { (char *) "codec", NULL };
 
   return protocols;
 }
diff --git a/tests/check/elements/videorate.c b/tests/check/elements/videorate.c
index d31bfd7e6..69eb3c6f5 100644
--- a/tests/check/elements/videorate.c
+++ b/tests/check/elements/videorate.c
@@ -79,7 +79,7 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 static void
-assert_videorate_stats (GstElement * videorate, gchar * reason,
+assert_videorate_stats (GstElement * videorate, const gchar * reason,
     guint64 xin, guint64 xout, guint64 xdropped, guint64 xduplicated)
 {
   guint64 in, out, dropped, duplicated;
diff --git a/tests/check/libs/pbutils.c b/tests/check/libs/pbutils.c
index c1219ba59..84f58e761 100644
--- a/tests/check/libs/pbutils.c
+++ b/tests/check/libs/pbutils.c
@@ -549,8 +549,9 @@ GST_START_TEST (test_pb_utils_install_plugins)
 {
   GstInstallPluginsContext *ctx;
   GstInstallPluginsReturn ret;
-  gchar *details[] = { "detail1", "detail2", NULL };
-  gchar *details_multi[] = { "detail1", "detail1", "detail2", NULL };
+  gchar *details[] = { (char *) "detail1", (char *) "detail2", NULL };
+  gchar *details_multi[] =
+      { (char *) "detail1", (char *) "detail1", (char *) "detail2", NULL };
 
   ctx = gst_install_plugins_context_new ();
 
diff --git a/tests/check/libs/video.c b/tests/check/libs/video.c
index 56e9f5f71..bf123573f 100644
--- a/tests/check/libs/video.c
+++ b/tests/check/libs/video.c
@@ -52,8 +52,8 @@ struct paintinfo_struct
 
 struct fourcc_list_struct
 {
-  char *fourcc;
-  char *name;
+  const char *fourcc;
+  const char *name;
   int bitspp;
   void (*paint_setup) (paintinfo * p, unsigned char *dest);
 };
diff --git a/tests/check/pipelines/simple-launch-lines.c b/tests/check/pipelines/simple-launch-lines.c
index 51c3052e1..ab636d90c 100644
--- a/tests/check/pipelines/simple-launch-lines.c
+++ b/tests/check/pipelines/simple-launch-lines.c
@@ -106,7 +106,7 @@ done:
 
 GST_START_TEST (test_element_negotiation)
 {
-  gchar *s;
+  const gchar *s;
 
   /* Ensures that filtering buffers with unknown caps down to fixed-caps 
    * will apply those caps to the buffers.
diff --git a/tests/examples/seek/scrubby.c b/tests/examples/seek/scrubby.c
index 7517ec2ac..aa6b35850 100644
--- a/tests/examples/seek/scrubby.c
+++ b/tests/examples/seek/scrubby.c
@@ -50,7 +50,7 @@ typedef struct
 dyn_link;
 
 static GstElement *
-gst_element_factory_make_or_warn (gchar * type, gchar * name)
+gst_element_factory_make_or_warn (const gchar * type, const gchar * name)
 {
   GstElement *element = gst_element_factory_make (type, name);
 
@@ -423,7 +423,7 @@ bus_message (GstBus * bus, GstMessage * message, gpointer data)
 
 typedef struct
 {
-  gchar *name;
+  const gchar *name;
   GstElement *(*func) (const gchar * location);
 }
 Pipeline;
diff --git a/tests/examples/seek/seek.c b/tests/examples/seek/seek.c
index 60573b347..d34dacc81 100644
--- a/tests/examples/seek/seek.c
+++ b/tests/examples/seek/seek.c
@@ -155,7 +155,7 @@ typedef struct
 dyn_link;
 
 static GstElement *
-gst_element_factory_make_or_warn (gchar * type, gchar * name)
+gst_element_factory_make_or_warn (const gchar * type, const gchar * name)
 {
   GstElement *element = gst_element_factory_make (type, name);
 
@@ -973,7 +973,7 @@ make_parselaunch_pipeline (const gchar * description)
 
 typedef struct
 {
-  gchar *name;
+  const gchar *name;
   GstElement *(*func) (const gchar * location);
 }
 Pipeline;
diff --git a/tests/icles/stress-playbin.c b/tests/icles/stress-playbin.c
index 33272a26f..3b9071033 100644
--- a/tests/icles/stress-playbin.c
+++ b/tests/icles/stress-playbin.c
@@ -113,7 +113,7 @@ main (int argc, char **argv)
   g_option_context_free (ctx);
 
   if (!bin)
-    bin = "playbin";
+    bin = g_strdup ("playbin");
 
   if (strcmp (bin, "playbin") && strcmp (bin, "playbin2")) {
     g_print ("Please provide a valid playbin argument; playbin | playbin2");
@@ -150,6 +150,7 @@ main (int argc, char **argv)
   }
 
   g_strfreev (args);
+  g_free (bin);
   g_timer_destroy (timer);
 
   return 0;