reading gif fread error was not handled properly

svn path=/trunk/externals/iem/iemgui/; revision=12496

1 files changed, 5 insertions, 1 deletions

diff --git a/src/iem_image.c b/src/iem_image.c
index b6debac..74a98f4 100644
--- a/src/iem_image.c
+++ b/src/iem_image.c
@@ -69,7 +69,11 @@ static t_symbol *iem_image_calc_size(t_iem_image *x)
     }
     else
     {
-      fread(buf, 22, sizeof(unsigned char), fh);
+      if(fread(buf, 22, sizeof(unsigned char), fh) < 22){
+	post("iem_image-ERROR: can not read header in %s ", namebuf);
+        x->x_gifsym = (t_symbol *)0;
+        return((t_symbol *)0);
+        };
       fclose(fh);
       c = (char *)buf;
       if((c[0] != 'G')||(c[1] != 'I')||(c[2] != 'F'))