diff options
Diffstat (limited to 'lib/hipe/test/basic_SUITE_data/basic_bignums.erl')
| -rw-r--r-- | lib/hipe/test/basic_SUITE_data/basic_bignums.erl | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/hipe/test/basic_SUITE_data/basic_bignums.erl b/lib/hipe/test/basic_SUITE_data/basic_bignums.erl index c455bf318f..79f62e3229 100644 --- a/lib/hipe/test/basic_SUITE_data/basic_bignums.erl +++ b/lib/hipe/test/basic_SUITE_data/basic_bignums.erl @@ -13,6 +13,8 @@ test() -> ok = test_big_fac(), ok = test_int_overfl_32(), ok = test_int_overfl_64(), + ok = test_int_overfl_32_guard(), + ok = test_int_overfl_64_guard(), ok. %%-------------------------------------------------------------------- @@ -122,3 +124,20 @@ test_int_overfl_64() -> add(X, Y) -> X + Y. %%-------------------------------------------------------------------- +%% Tests for correct handling of integer overflow in guards + +test_int_overfl_32_guard() -> + ok = overfl_in_guard(16#7ffffff, 0), + ok = overfl_in_guard(16#7ffffff, 16#7ffffff), + ok. + +test_int_overfl_64_guard() -> + ok = overfl_in_guard(16#7ffffffffffffff, 0), + ok = overfl_in_guard(16#7ffffffffffffff, 16#7ffffffffffffff), + ok. + +overfl_in_guard(X, Y) -> + case ok of + V when X+Y > 12 -> V; + _ -> bad + end. |