Fix crash due to sizeof() used where PAM_STRUCT_SIZE should be

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@470 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 3 insertions, 2 deletions

diff --git a/editor/pamditherbw.c b/editor/pamditherbw.c
index 49e78a4e..f26468bb 100644
--- a/editor/pamditherbw.c
+++ b/editor/pamditherbw.c
@@ -153,6 +153,7 @@ parseCommandLine(int argc, char ** argv,
 }
 
 
+
 static struct pam
 makeOutputPam(unsigned int const width,
               unsigned int const height) {
@@ -339,7 +340,7 @@ doHilbert(FILE *       const ifP,
     int *x,*y;
     int sum;
 
-    grays = pnm_readpam(ifP, &graypam, sizeof(graypam));
+    grays = pnm_readpam(ifP, &graypam, PAM_STRUCT_SIZE(tuple_type));
 
     bitpam = makeOutputPam(graypam.width, graypam.height);
 
@@ -852,7 +853,7 @@ main(int argc, char *argv[]) {
         tuple * bitrow;
         int row;
 
-        pnm_readpaminit(ifP, &graypam, sizeof(graypam));
+        pnm_readpaminit(ifP, &graypam, PAM_STRUCT_SIZE(tuple_type));
 
         bitpam = makeOutputPam(graypam.width, graypam.height);