Add a comment & changelog entry for the mmap bug fix.

2 files changed, 2 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index a827947c7..ff67ebc56 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -20,6 +20,7 @@ xine-lib (1.1.7) (unreleased)
     also avoids an improper saturation.
   * Prioritize the musepack demuxer over mpgaudio, as sometimes the latter can
     misfire and report a good file as unplayable.
+  * Fix an mmap problem with huge files on 32-bit systems.
 
 xine-lib (1.1.6)
   * Split the DirectFB plugin into X11 and non-X versions.
diff --git a/src/input/input_file.c b/src/input/input_file.c
index d57eaacb9..c755a84a8 100644
--- a/src/input/input_file.c
+++ b/src/input/input_file.c
@@ -426,7 +426,7 @@ static int file_plugin_open (input_plugin_t *this_gen ) {
   }
 
 #ifdef HAVE_MMAP
-  tmp_size = sbuf.st_size;
+  tmp_size = sbuf.st_size; /* may cause truncation - if it does, DON'T mmap! */
   if ((tmp_size == sbuf.st_size) &&
       ( (this->mmap_base = mmap(NULL, tmp_size, PROT_READ, MAP_SHARED, this->fh, 0)) != (void*)-1 )) {
     this->mmap_on = 1;