[glib: 3/25] Fix signedness in glib/gmappedfile.c

[Philip Withnall <pwithnall src gnome org>]

commit 8eae303da02e51d846f8aad53ee9eb40eb19dc10
Author: Emmanuel Fleury <emmanuel fleury u-bordeaux fr>
Date:   Fri Feb 1 20:46:10 2019 +0100

    Fix signedness in glib/gmappedfile.c
    
    glib/gmappedfile.c: In function ‘mapped_file_new_from_fd’:
    glib/gmappedfile.c:153:18: error: comparison of integer expressions of different signedness: ‘__off_t’ 
{aka ‘long int’} and ‘long unsigned int’ [-Werror=sign-compare]
       if (st.st_size > G_MAXSIZE)
                      ^

 glib/gmappedfile.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/glib/gmappedfile.c b/glib/gmappedfile.c
index d180a9a4d..36e7ca5a8 100644
--- a/glib/gmappedfile.c
+++ b/glib/gmappedfile.c
@@ -150,7 +150,7 @@ mapped_file_new_from_fd (int           fd,
   file->contents = MAP_FAILED;
 
 #ifdef HAVE_MMAP
-  if (st.st_size > G_MAXSIZE)
+  if (sizeof (st.st_size) > sizeof (gsize) && st.st_size > (off_t) G_MAXSIZE)
     {
       errno = EINVAL;
     }