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| author | Magnus Lång <margnus1@telia.com> | 2016-09-07 16:45:21 +0200 |
|---|---|---|
| committer | Magnus Lång <margnus1@telia.com> | 2016-09-07 16:45:21 +0200 |
| commit | 5a9cc02690d033a2f3e695d7ac42c2756dbaaf04 (patch) | |
| tree | a90f0eb983d11a4bf99f8e6db5be350afd5e33a5 /lib/dialyzer/test/map_SUITE_data | |
| parent | 71894a879d6254693791585246ce340dd7414b82 (diff) | |
| download | erlang-5a9cc02690d033a2f3e695d7ac42c2756dbaaf04.tar.gz | |
erl_bif_types: Properly unopaque maps:merge/2 args
erl_bif_types:type/5 was calling erl_types:map_pairwise_merge/3 directly
with its (potentially opaque) arguments, causing Dialyzer crashes.
Bug (ERL-249) reported and minimised test case provided by Felipe
Ripoll.
Diffstat (limited to 'lib/dialyzer/test/map_SUITE_data')
| -rw-r--r-- | lib/dialyzer/test/map_SUITE_data/src/opaque_bif.erl | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/dialyzer/test/map_SUITE_data/src/opaque_bif.erl b/lib/dialyzer/test/map_SUITE_data/src/opaque_bif.erl new file mode 100644 index 0000000000..40214a1887 --- /dev/null +++ b/lib/dialyzer/test/map_SUITE_data/src/opaque_bif.erl @@ -0,0 +1,13 @@ +-module(opaque_bif). +-export([o1/1]). +-export_type([opaque_any_map/0]). +-opaque opaque_any_map() :: map(). + +%% ERL-249: A bug with opaque arguments to maps:merge/2 +%% Reported by Felipe Ripoll on 6/9/2016 +-spec o1(opaque_any_map()) -> opaque_any_map(). +o1(Map) -> + maps:merge(o1_c(), Map). + +-spec o1_c() -> opaque_any_map(). +o1_c() -> #{}. |