| Age | Commit message (Collapse) | Author |
|---|
|
|
|
Reported-by: Ali Sabil
|
|
In particular fix handling of records.
|
|
The -dialyzer() attribute can be used for suppressing warnings in a
module by specifying functions or warning options. It can also be used
for requesting warnings in a module.
|
|
* maint:
dialyzer, hipe: Fix a bug concerning is_record/2,3
|
|
Also fixed some cases where Dialyzer could crash due to reaching
system limits.
|
|
* maint:
[dialyzer] Correct a doc bug introduced in 0b041238
[dialyzer] Use the option 'dialyzer' to control the compiler
[dialyzer] Fix handling of literal records
|
|
This ticket is about records in Erlang code, and when to check the
fields against the (optional) types given when defining records.
Dialyzer operates on the Erlang Core format, where there are no trace
of records. The fix implemented is a Real Hack:
Given the new option 'dialyzer' erl_expand_records marks the line
number of records in a way that is undone by v3_core, which in turn
inserts annotations that can be recognized by Dialyzer.
|
|
The pre-defined types array(), dict(), digraph(), gb_set(), gb_tree(),
queue(), set(), and tid() have been removed.
|
|
Two steps are needed to make this work:
1) Avoid generating the additional "apply_constraint" in dialyzer_typesig by
reporting every function argument as a potential external function (patch on
dialyzer_dep).
This will produce correct success typings for all functions in the test case,
but dataflow would miss the key warnings that help identify the bugs.
2) Patch dialyzer_dataflow so that it uses the "handle just external" path as a
fallback whenever there are any external calls. As a result, if we have info
about some paths, then:
a) use the old "handle known apply" code to mark these functions as used and
b) ignore the generalized result and use the one found by typesig for the
return value of the apply itself.
|
|
The types array(), dict(), digraph(), gb_set(), gb_tree(), queue(),
set(), and tid() have been deprecated. They will be removed in OTP 18.0.
Instead the types array:array(), dict:dict(), digraph:graph(),
gb_set:set(), gb_tree:tree(), queue:queue(), sets:set(), and ets:tid()
can be used. (Note: it has always been necessary to use ets:tid().)
It is allowed in OTP 17.0 to locally re-define the types array(), dict(),
and so on.
New types array:array/1, dict:dict/2, gb_sets:set/1, gb_trees:tree/2,
queue:queue/1, and sets:set/1 have been added.
|
|
* bjorn/lc-warnings/OTP-11626:
dialyzer: Silence useless warnings about list comprehensions
|
|
Dialyzer will warn if the value of list comprehension is
ignored by putting it in a sequence like this:
[SomeSideEffect(E) || E <- Es],
ok
To avoid a warning, you'll have to write:
_ = [SomeSideEffect(E) || E <- Es],
ok
Most of the time, this warning is merely annoying because it does
not point out any real errors.
Kostis Sagonas suggested that by suppressing the warning for
list comprehension that return a list of a simple type (e.g. ['ok']),
there would be no warning for code such as:
[io:format("~p\n", [E]) || E <- Es],
ok
but there would be still be a warning for:
[file:close(Fd) || Fd <- Fds],
ok
because an error condition is ignored.
|
|
|
|
|
|
|
|
|
|
It is now OK to inspect and modify the internals of opaque types within
the scope of the module.
The contracts are used for decorating types with opaqueness when it is
harmless to do so. The opaqueness is propagated by the typesig module
and also by the dataflow module.
A lot of details have been fixed or updated. In particular the modules
erl_types and erl_bif_types have been modified extensively.
The version in vsn.mk has been updated to 2.7. The reason is a
modification of #opaque{} in erl_types.
Dialyzer seems to be about five percent slower than it used to be.
|
|
Dialyzer so far only supported letrecs at the top-level
and comprehension-like letrecs (i.e. that were directly applied)
in their body.
This commit address this issue by storing in the callgraph
bound letrec labels pointing to their functions. This information
is then used by the dataflow to properly lookup recursive
definitions.
|
|
|
|
This extension allowed minimal detection of race conditions that were passing
through behaviour API calls, but had no tests in any suite and also caused a
crash in R15B02.
|
|
Dialyzer no longer outputs warnings for unused anonymous functions
("funs"). Warnings are still output for unused functions.
Funs in functions with -nowarn_unused_function attributes generated
warnings for unused functions. Unused list comprehensions also
generated warnings for unused funs.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Depending of the ordering of the functions during dataflow, a
function with an infinite loop might be identified as one that
always crashes. This is fixed now, by allowing restoration of
the infinitely-looping status.
|
|
Refactorings, code movements and reflection of mutable variables in the code.
|
|
Dialyzer was not reporting unused functions with 0 arity. This was not
a real issue, until we found out that there could be cases where this
could lead to false warnings. This was the case in "no_local_return.erl".
|
|
|
|
By keeping tracks of modified types the joining of maps ha become
significantly faster.
|
|
|
|
No warnings are emitted for funs that are non-returning when the
function that generates them has a contract that specifies that
it will return such a non-returning fun.
The actual bug, reported by Tuncer Ayaz and simplified by Maria
Christakis is included in Dialyzer's tests.
|
|
|
|
|
|
Fixed dialyzer warning occuring on binary comprehension of form
"<< <<>> || {A, B} <- [{a, b}] >>" caused by default clause
inserted by compiler. Since this clause is different from the
case of list comprehension, dialyzer fails to suppress that warning.
|
|
|
|
|
|
Applies to the specification of the return value of a function.
|
|
|
|
|
|
The wording of warnings about unsatisfiable guards that used
'not' was incorrect (the 'not' was not mentioned and it appeared
as "Guard test is_atom(atom()) can never succeed").
|
|
Apart from the obvious bug in the negative evaluation of an 'and'
guard, Dialyzer handled dont_know cases rather single-mindedly
towards the positive branch. This patch allows for negative results
as well and does some clever guesses to narrow them down. It was
constructed similarly to the handling of the 'not' guard.
|
|
|
|
Bumped version number and wrote RELEASE_NOTES.
Included all changes described in release notes.
Some spec-related changes to some files in lib/hipe/cerl.
|
|
|
