diff options
Diffstat (limited to 'lib/compiler/test/float_SUITE.erl')
| -rw-r--r-- | lib/compiler/test/float_SUITE.erl | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/lib/compiler/test/float_SUITE.erl b/lib/compiler/test/float_SUITE.erl index 012810aba2..0fa8070dc8 100644 --- a/lib/compiler/test/float_SUITE.erl +++ b/lib/compiler/test/float_SUITE.erl @@ -20,15 +20,17 @@ -module(float_SUITE). -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, - pending/1,bif_calls/1,math_functions/1,mixed_float_and_int/1]). + pending/1,bif_calls/1,math_functions/1,mixed_float_and_int/1, + subtract_number_type/1,float_followed_by_guard/1]). -include_lib("common_test/include/ct.hrl"). suite() -> [{ct_hooks,[ts_install_cth]}]. -all() -> +all() -> [pending, bif_calls, math_functions, - mixed_float_and_int]. + mixed_float_and_int, subtract_number_type, + float_followed_by_guard]. groups() -> []. @@ -176,5 +178,31 @@ mixed_float_and_int(Config) when is_list(Config) -> pc(Cov, NotCov, X) -> round(Cov/(Cov+NotCov)*100) + 42 + 2.0*X. +subtract_number_type(Config) when is_list(Config) -> + 120 = fact(5). + +fact(N) -> + fact(N, 1). + +fact(0, P) -> P; +fact(1, P) -> P; +fact(N, P) -> fact(N-1, P*N). + +float_followed_by_guard(Config) when is_list(Config) -> + true = ffbg_1(5, 1), + false = ffbg_1(1, 5), + ok. + +ffbg_1(A, B0) -> + %% This is a non-guard block followed by a *guard block* that starts with a + %% floating point operation, and the compiler erroneously assumed that it + %% was safe to skip fcheckerror because the next block started with a float + %% op. + B = id(B0) / 1.0, + if + A - B > 0.0 -> true; + A - B =< 0.0 -> false + end. + id(I) -> I. |