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* maint:
dialyzer: Substitute 'opacity' for 'opaqueness'
dialyzer: Improve a warning message
dialyzer: Improve a warning message
dialyzer: Correct a warnings message
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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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* maint:
Update preloaded
erts: Correct type declaration of match specification head
Conflicts:
erts/preloaded/ebin/erlang.beam
erts/preloaded/ebin/erts_internal.beam
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Bug reported by Peti Gömöri <[email protected]>.
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* maint:
dialyzer: Fix error handling of bad -dialyzer() attributes
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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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* maint:
dialyzer: Fix opaque bug
dialyzer: Fix opaque bugs
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* hasse/dialyzer/fix_opaque_bugs/OTP-13693:
dialyzer: Fix opaque bug
dialyzer: Fix opaque bugs
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* maint:
Update Dialyzer documentation
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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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The previous variable names can be generated by
projects like LFE and Elixir, leading to possible
conflicts. Our first to choice to solve such conflicts
was to use $ but that's not a valid variable name in core.
Therefore we picked @ which is currently supported and
still reduces the chance of conflicts.
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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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t_map/3 previously required callers to perform this normalisation, but
as t_from_form/5 would sometimes fail to do so, this requirement is
relaxed.
Bug (ERL-177) reported and shrunk by Luke Imhoff.
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* hasse/dialyzer/improve_from_form/OTP-13547:
Update primary bootstrap
stdlib: Correct types and specs
dialyzer: Minor adjustments
dialyzer: Suppress unmatched_return for send/2
dialyzer: Improve the translation of forms to types
dialyzer: Use a cache when translating forms to types
dialyzer: Prepare erl_types:t_from_form() for a cache
dialyzer: Optimize erl_types:t_form_form()
dialyzer: Correct types
syntax_tools: Correct types
erts: Correct character repr in doc of the abstract format
stdlib: Correct types and specs
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It is possible that '...' is added later (OTP 20.0), but for now we
are not sure of all details.
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* stavros/dialyzer/fix_call_site_analysis/OTP-13655/PR-1092:
Fix a bug in Dialyzer related to call-site analysis
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Dialyzer's "dataflow" module is using information from the callgraph to
determine which functions may be called at a particular call-site. Unfortunately
this information can include functions that are certainly not among the possible
choices. We don't want to emit warnings in such cases, so a "reasonable"
compromise is to stay silent if there are many possible funs and at least one of
them can succeed.
Bug reported by Dan Gudmundsson, test shrunk down by Magnus Lång.
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Dialyzer failed to remove all loops among constraints.
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This reverts commit e020f75c10410a6943cd055bfa072a2641eab7da.
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* kostis/dialyzer/opaque_type/OTP-13586/PR-1047:
Declare the erl_types:var_table() type as opaque
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Dialyzer's dependency calculation was throwing an error when
encountering an 'apply' node with something that was not a variable
(e.g., a literal). The rest of the code did not know what to do with
this error, which resulted in dialyzer crashing. Fix this by ingoring
the detected error in the dependency calculation phase; later dialyzer
passes know how to properly handle and report this kind of errors
anyway.
This fixes [Erlang-JIRA] (ERL-138).
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This reverts commit bd64ad8e15d66e48b36dbe3584315dd5cfc8b59a.
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and do the following changes:
in erl_types: export the type and an appropriate constructor for it
in dialyzer_contracts: perform all necessary code modifications to
fix all dialyzer warnings
Although no warnings are reported by dialyzer, it's quite possible that
these are not the only places where the opacity of the var_table() data
structure is violated. But I decided to leave these places for a better
version of dialyzer to discover...
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Optimization: A few dictionaries are maps instead of dicts.
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