File: Test154.ML

package info (click to toggle)
polyml 5.6-8
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 31,892 kB
  • ctags: 34,453
  • sloc: cpp: 44,983; ansic: 24,520; asm: 14,850; sh: 11,730; makefile: 551; exp: 484; python: 253; awk: 91; sed: 9
file content (15 lines) | stat: -rw-r--r-- 405 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
(* Bug in X86 code-generation.  Because the tag is subtracted AFTER the operation
   an operation that actually overflows may not be correctly detected. *)



fun t x = x + x * 1073741824;

(* Use ! and ref here to prevent the compiler interpreting it. *)
if ! (ref t) ~1 > 0 then raise Fail "wrong" else ();

fun s x = x + x * 4611686018427387904;

if ! (ref s) ~1 > 0 then raise Fail "wrong" else ();