diff --git a/ffmpeg.c b/ffmpeg.c
index e7db67a93d..6baf070d86 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -86,14 +86,8 @@
 #include <conio.h>
 #endif
 
-#if HAVE_THREADS
 #if HAVE_PTHREADS
 #include <pthread.h>
-#else
-//#include "libavcodec/w32pthreads.h"
-#undef HAVE_THREADS
-#define HAVE_THREADS 0
-#endif
 #endif
 
 #include <time.h>
@@ -181,7 +175,7 @@ static int print_stats = 1;
 static int debug_ts = 0;
 static int current_time;
 
-#if HAVE_THREADS
+#if HAVE_PTHREADS
 /* signal to input threads that they should exit; set by the main thread */
 static int transcoding_finished;
 #endif
@@ -271,7 +265,7 @@ typedef struct InputFile {
                              from ctx.nb_streams if new streams appear during av_read_frame() */
     int rate_emu;
 
-#if HAVE_THREADS
+#if HAVE_PTHREADS
     pthread_t thread;           /* thread reading from this file */
     int finished;               /* the thread has exited */
     int joined;                 /* the thread has been joined */
@@ -3334,7 +3328,7 @@ static int check_keyboard_interaction(int64_t cur_time)
     return 0;
 }
 
-#if HAVE_THREADS
+#if HAVE_PTHREADS
 static void *input_thread(void *arg)
 {
     InputFile *f = arg;
@@ -3446,7 +3440,7 @@ static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
 
 static int get_input_packet(InputFile *f, AVPacket *pkt)
 {
-#if HAVE_THREADS
+#if HAVE_PTHREADS
     if (nb_input_files > 1)
         return get_input_packet_mt(f, pkt);
 #endif
@@ -3479,7 +3473,7 @@ static int transcode(void)
 
     timer_start = av_gettime();
 
-#if HAVE_THREADS
+#if HAVE_PTHREADS
     if ((ret = init_input_threads()) < 0)
         goto fail;
 #endif
@@ -3629,7 +3623,7 @@ static int transcode(void)
         /* dump report by using the output first video and audio streams */
         print_report(0, timer_start, cur_time);
     }
-#if HAVE_THREADS
+#if HAVE_PTHREADS
     free_input_threads();
 #endif
 
@@ -3676,7 +3670,7 @@ static int transcode(void)
 
  fail:
     av_freep(&no_packet);
-#if HAVE_THREADS
+#if HAVE_PTHREADS
     free_input_threads();
 #endif
 
diff --git a/libavfilter/avfilter.c b/libavfilter/avfilter.c
index f8fc483bd9..65ad457384 100644
--- a/libavfilter/avfilter.c
+++ b/libavfilter/avfilter.c
@@ -231,8 +231,12 @@ int avfilter_config_links(AVFilterContext *filter)
                                                     "callbacks on all outputs\n");
                     return AVERROR(EINVAL);
                 }
-            } else if ((ret = config_link(link)) < 0)
+            } else if ((ret = config_link(link)) < 0) {
+                av_log(link->src, AV_LOG_ERROR,
+                       "Failed to configure output pad on %s\n",
+                       link->src->name);
                 return ret;
+            }
 
             switch (link->type) {
             case AVMEDIA_TYPE_VIDEO:
@@ -277,8 +281,12 @@ int avfilter_config_links(AVFilterContext *filter)
             }
 
             if ((config_link = link->dstpad->config_props))
-                if ((ret = config_link(link)) < 0)
+                if ((ret = config_link(link)) < 0) {
+                    av_log(link->src, AV_LOG_ERROR,
+                           "Failed to configure input pad on %s\n",
+                           link->dst->name);
                     return ret;
+                }
 
             link->init_state = AVLINK_INIT;
         }
diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 6e53e9e4a9..5ac6151e4a 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -1141,11 +1141,11 @@ static int rtmp_open(URLContext *s, const char *uri, int flags)
             goto fail;
         }
 
-        if (!strchr(fname, ':') &&
+        if (!strchr(fname, ':') && len >= 4 &&
             (!strcmp(fname + len - 4, ".f4v") ||
              !strcmp(fname + len - 4, ".mp4"))) {
             memcpy(rt->playpath, "mp4:", 5);
-        } else if (!strcmp(fname + len - 4, ".flv")) {
+        } else if (len >= 4 && !strcmp(fname + len - 4, ".flv")) {
             fname[len - 4] = '\0';
         } else {
             rt->playpath[0] = 0;