Did shift of 32. Not allowed

1991-10-02 13:41:33 +00:00
parent 2b7aae3b44
commit 24a353f3e1
2 changed files with 4 additions and 2 deletions
--- a/lang/cem/cemcom/struct.c
+++ b/lang/cem/cemcom/struct.c
@@ -456,7 +456,8 @@ add_field(szp, fd, fdtpp, idf, stp)
 		Sign extension could occur on some machines when shifting
 		the mask to the left.
 	*/
-	fd->fd_mask = (1 << fd->fd_width) - 1;
+	if (fd->fd_width >= 8*sizeof(arith)) fd->fd_mask = -1;
+	else fd->fd_mask = (1L << fd->fd_width) - 1;

 	if (options['r'])	/* adjust the field at the right	*/
 		fd->fd_shift = bits_declared - fd->fd_width;