@@ -787,6 +787,7 @@ int read_yesno(void)

 int read_file(const char *filename, char **bufptr, size_t *size)

 {

+    int ret;

     FILE *f = fopen(filename, "rb");

     if (!f) {

@@ -802,11 +803,22 @@ int read_file(const char *filename, char **bufptr, size_t *size)

         fclose(f);

         return AVERROR(ENOMEM);

     }

-    fread(*bufptr, 1, *size, f);

-    (*bufptr)[*size++] = '\0';

+    ret = fread(*bufptr, 1, *size, f);

+    if (ret < *size) {

+        av_free(*bufptr);

+        if (ferror(f)) {

+            av_log(NULL, AV_LOG_ERROR, "Error while reading file '%s': %s\n",

+                   filename, strerror(errno));

+            ret = AVERROR(errno);

+        } else

+            ret = AVERROR_EOF;

+    } else {

+        ret = 0;

+        (*bufptr)[*size++] = '\0';

+    }

     fclose(f);

-    return 0;

+    return ret;

 }

 void init_pts_correction(PtsCorrectionContext *ctx)