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* hasse/dialyzer/fix_warnings/OTP-14177:
dialyzer: Improve a warning
dialyzer: Fix a weird warning
dialyzer: Fix an opaque bug
dialyzer: Minor fix
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* siri/ct_hooks/callbacks-on-skip/OTP-10599:
[ct] Update built-in ct hooks with new Suite parameter
[cth_surefire] Handle skips from test spec
[ct] Remove excessive skipped/failed tag in hook function
[ct] Send tc_start event on force_stop and failed sequence
[ct] Correctly handle process died in init and end_per_testcase
[ct] Fix faulty hook callbacks for skipped tests
Add dummy end_per_suite/1
[ct] Fix hooks and fail when one of init/end_per_* does not exit
[ct] Add Suite argument to hook callback functions
[ct] Fix function_clause in ct_framework when hook function crashes
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Use init:get_argument(home) to find the location of the home
directory. That will work on all platforms (including Windows).
Note that the run-time system will fail to start if HOME
(or the equivalent on Windows) is not set. Therefore, it can
be assumed that init:get_argument(home) will not fail.
ERL-161
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When a pattern a type do not match, opaque warnings were given
precedence before structure mismatches.
This is no longer always the case.
Mentioned by Nick Marino on erlang-questions.
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An opaque bug that would crash Dialyzer has been fixed.
The bug was reported by Nick Marino.
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common_test requires that if init_per_suite/1 exists, then
end_per_suite/1 must also exist. If end_per_suite/1 does not exist,
then it will be marked in the log as failed with reason 'undef'. Some
test suites are corrected to avoid this.
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Use explicit file names of PLTs so that daily builds&tests running
simultaneously under the same user do not interfere with each other
("$HOME/.dialyzer_plt" is the default PLT name).
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dialyzer_typesig:traverse_scc() now resets the context for each
element of the SCC. Since the results of traversing the elements are
saved in the 'cmap' table, there is no need to create an SCC
conjunction. For huge SCCs this saves quite some time: the
lift_lists() function added one element at a time, which made the
calculation of deps very slow.
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Improve the evaluation of long lists of constraints.
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* hasse/stdlib/fix_anno_types/OTP-14131:
stdlib: Correct signatures of functions in erl_parse
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File annotations {file, File} in Core Erlang code is replaced by
{file, FakeFile}, where FakeFile is "0", "1", ..., in order to save
memory. When a warning message is created, FakeFile is translated to
the original File (a bit awkward but easy to do).
The Core code stored in ETS tables needs less space, but more
important is that a less heap memory is used in the dataflow,
warnings, and typesig phases, allowing more parallelism.
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The translation from forms to types is done in a separate process
in an attempt to reduce peak memory usage.
Expect further optimizations as it is probably not feasible
in the long run to keep all type information on the heap.
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Some SCC info is no longer cached. It reduces the peak memory
consumption of workers during the typesig phase, and seems to cost
very little time.
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The cache used for speeding up the translation from forms to types is
no longer global, but reset per module. The peak memory consumption
is reduced, and the added time seems to be small.
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Using erlang:system_info(schedulers_online) for determining
parallelism is recommended by OTP experts. It takes care of "+S 4:1"
and simultaneous loading of HiPE code.
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The condensed graph of SCCs occupies less ETS memory. A table
translating to and from SCC to a unique integer is introduced.
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By not using ETS when calculating the condensation of graphs, peak
heap memory consumption is reduced.
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The mini PLT is extended to hold all data of the full PLT, and the
full PLT is restored when needed (for storing the PLT on file).
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The signatures of erl_parse:anno_to_term/1 and
erl_parse:anno_from_term/1 are corrected. Using these function no
longer results in false Dialyzer warnings.
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Characters ($char) can be used in constant pattern expressions. They
can also be used in types and contracts.
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Suggested by Kostis.
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Messages regarding guards with orelse/andalso could look
like "Clause guard cannot succeed. The variable A was matched
against the type any()". Now they look like as if or/and is
used: "Guard test is_integer(A::atom()) can never succeed".
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Messages like "Invalid type specification for function
para3:exp_adt/0. The success typing is () -> 3" now look like
"The specification for para3:exp_adt/0 has an opaque subtype
para3_adt:exp1(para3_adt:exp2()) which is violated by the success
typing () -> 3".
The old message did not give any clue as to what invalidated the
contract, namely the opaque subtype.
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Messages like "The attempt to match a term of type rec_api:f()
against the variable _ breaks the opaqueness of rec_adt:f()" now
look like "The attempt to match a term of type rec_adt:f()
against the record field 'f' with type rec_api:f() breaks the
opaqueness of the term".
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Bug reported by Peti Gömöri <[email protected]>.
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If a dialyzer module attribute references an undefined (local)
function an error tuple is thrown but no caught. This leads to a
'nocatch' error and not the intended "clean" error.
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* hasse/dialyzer/fix_opaque_bugs/OTP-13693:
dialyzer: Fix opaque bug
dialyzer: Fix opaque bugs
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Language cleaned up by the technical writer xsipewe from
Combitech. Proofreading and corrections by Hans Bolinder.
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The "decoration" of opaque types works better than before when opaque
types are used by other opaque types.
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t_from_form() sometimes returned a more general type than it should
have done due to a bug in from_form_loop(): it stopped when the limit
was exceeded, which could mean a collapsed type. Returning a type with
smaller depth should fix this.
is_specialization() now handles opaque types before unions, which
should fix another problem.
The bugs reported by Kostis.
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into maint
* margnus1/dialyzer/fix_maps_opaque/ERL-249/PR-1161/OTP-13878:
erl_bif_types: Properly unopaque maps:merge/2 args
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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.
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The test 'proper' takes some time.
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Let it handle `dial_warning()` input as well, to match what `format_warning/2` expects.
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Warnings about clauses that cannot match and are also compiler generated
are suppressed unless none of the clauses return.
This feature is useful for non-Erlang BEAM languages (such as Elixir)
that compile to Erlang and expand certain language constructs into case
statements. In that case, as long as the language construct can succeed,
these warnings are undesired and appear spurious to users that do not
check the Erlang code that their program expands into.
Thanks to José Valim for the test (slightly modified).
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