diff options
| author | Björn-Egil Dahlberg <[email protected]> | 2015-03-24 17:05:58 +0100 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2015-03-24 17:37:26 +0100 |
| commit | a1520d8bd2b467d5128998a5069611b9e6252653 (patch) | |
| tree | 5f99a62d68c6b4e87437a6724b7c0844ee7cb5d1 /erts/emulator | |
| parent | a48186ef9de62ef412327bb4dafe7d50d9278f71 (diff) | |
| download | otp-a1520d8bd2b467d5128998a5069611b9e6252653.tar.gz otp-a1520d8bd2b467d5128998a5069611b9e6252653.tar.bz2 otp-a1520d8bd2b467d5128998a5069611b9e6252653.zip | |
erts: Fix comparison of exact terms
Comparison of exact terms could cause faulty term tests.
This was caused by a faulty (too small) internal type.
Symptom:
-1 = erts_internal:cmp_term(2147483648,0). %% wrong
Correct:
1 = erts_internal:cmp_term(2147483648,0).
Reported-by: Jesper Louis Andersen
Diffstat (limited to 'erts/emulator')
| -rw-r--r-- | erts/emulator/beam/bif.c | 2 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_map.c | 4 | ||||
| -rw-r--r-- | erts/emulator/test/map_SUITE.erl | 45 |
3 files changed, 48 insertions, 3 deletions
diff --git a/erts/emulator/beam/bif.c b/erts/emulator/beam/bif.c index 42dd160e38..5ac74032fa 100644 --- a/erts/emulator/beam/bif.c +++ b/erts/emulator/beam/bif.c @@ -4659,7 +4659,7 @@ BIF_RETTYPE bump_reductions_1(BIF_ALIST_1) } BIF_RETTYPE erts_internal_cmp_term_2(BIF_ALIST_2) { - int res = CMP_TERM(BIF_ARG_1,BIF_ARG_2); + Sint res = CMP_TERM(BIF_ARG_1,BIF_ARG_2); /* ensure -1, 0, 1 result */ if (res < 0) { diff --git a/erts/emulator/beam/erl_map.c b/erts/emulator/beam/erl_map.c index 5e740aacdd..a180047f6c 100644 --- a/erts/emulator/beam/erl_map.c +++ b/erts/emulator/beam/erl_map.c @@ -400,7 +400,7 @@ BIF_RETTYPE maps_merge_2(BIF_ALIST_2) { Eterm *ks,*vs,*ks1,*vs1,*ks2,*vs2; map_t *mp1,*mp2,*mp_new; Uint n1,n2,i1,i2,need,unused_size=0; - int c = 0; + Sint c = 0; mp1 = (map_t*)map_val(BIF_ARG_1); mp2 = (map_t*)map_val(BIF_ARG_2); @@ -798,7 +798,7 @@ int erts_validate_and_sort_map(map_t* mp) Uint sz = map_get_size(mp); Uint ix,jx; Eterm tmp; - int c; + Sint c; /* sort */ diff --git a/erts/emulator/test/map_SUITE.erl b/erts/emulator/test/map_SUITE.erl index 888ed8e272..e877f7a240 100644 --- a/erts/emulator/test/map_SUITE.erl +++ b/erts/emulator/test/map_SUITE.erl @@ -58,6 +58,7 @@ t_maps_without/1, %% misc + t_erts_internal_order/1, t_pdict/1, t_ets/1, t_dets/1, @@ -96,6 +97,7 @@ all() -> [ %% Other functions + t_erts_internal_order, t_pdict, t_ets, t_tracing @@ -960,6 +962,49 @@ t_maps_without(_Config) -> %% MISC + +t_erts_internal_order(_Config) when is_list(_Config) -> + + -1 = erts_internal:cmp_term(1,2), + 1 = erts_internal:cmp_term(2,1), + 0 = erts_internal:cmp_term(2,2), + + + -1 = erts_internal:cmp_term(1,a), + 1 = erts_internal:cmp_term(a,1), + 0 = erts_internal:cmp_term(a,a), + + -1 = erts_internal:cmp_term(1,1.0), + 1 = erts_internal:cmp_term(1.0,1), + 0 = erts_internal:cmp_term(1.0,1.0), + + -1 = erts_internal:cmp_term(1,1 bsl 65), + 1 = erts_internal:cmp_term(1 bsl 65,1), + 0 = erts_internal:cmp_term(1 bsl 65, 1 bsl 65), + + -1 = erts_internal:cmp_term(1 bsl 65,float(1)), + 1 = erts_internal:cmp_term(float(1),1 bsl 65), + -1 = erts_internal:cmp_term(1,float(1 bsl 65)), + 1 = erts_internal:cmp_term(float(1 bsl 65),1), + 0 = erts_internal:cmp_term(float(1 bsl 65), float(1 bsl 65)), + + %% reported errors + -1 = erts_internal:cmp_term(0,2147483648), + 0 = erts_internal:cmp_term(2147483648,2147483648), + 1 = erts_internal:cmp_term(2147483648,0), + + M = #{0 => 0,2147483648 => 0}, + true = M =:= binary_to_term(term_to_binary(M)), + + F1 = fun(_, _) -> 0 end, + F2 = fun(_, _) -> 1 end, + M0 = maps:from_list( [{-2147483649, 0}, {0,0}, {97, 0}, {false, 0}, {flower, 0}, {F1, 0}, {F2, 0}, {<<>>, 0}]), + M1 = maps:merge(M0, #{0 => 1}), + 8 = maps:size(M1), + 1 = maps:get(0,M1), + ok. + + t_pdict(_Config) -> put(#{ a => b, b => a},#{ c => d}), |