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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.
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To reproduce the error:
$ echo '-module(hello).' > hello.erl
$ erl
1> c(hello, [native,{hipe,[no_remove_comments]}]).
[...]
<HiPE (v 3.10.2.1)> Error: [hipe:834]: ERROR: {{case_clause,
{icode_comment,call_ext_only}},
[{hipe_icode,successors,1,
[{file,"hipe_icode.erl"},
{line,1444}]},
[...]
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The R16B03 release
Conflicts:
lib/sasl/vsn.mk
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Hans Bolider reported a dialyzer crash when using a remote type in
the tail position of a maybe_improper_list() declaration. A test
was created (by extending an existing module of the testsuite)
and erl_types was modified to expand the remote type and not pass
it unexpanded to subsequent phases in the processing.
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The R16B02 release
Conflicts:
lib/sasl/vsn.mk
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* maint:
Change encoding of troublesome notes.xml files to utf-8
Convert some notes.xml files from latin-1 to utf-8
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In the master branch, the encoding for most xml files have been
changed from latin-1 to utf-8. The problem is, that the corresponding
files in the maint branch still are encoded in latin-1, and that
a merge from maint to master may bring in characters encoded in latin-1
into a notes.xml file declared to be in utf-8.
To fix the problem once and for all (for the files involved), we'll
need to re-encode the files files utf-8 in maint, and then merge to
master.
Noticed-by: Magnus Henoch
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The R16B01 release
Conflicts:
lib/sasl/vsn.mk
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* ks/hipe-cleanup-escaping/OTP-11031:
Loosen the assumptions of code that handles escaping functions
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The HiPE compiler implicitly relied on the assumption that a function
will never appear as both exported and also used as function closure.
This was true because the BEAM compiler prior to R16B created module
local anonymous functions for each closure. A proposed change to the
BEAM compiler invalidates this invariant, so in order to accommodate
for this change there needs to be a change of how the set of possibly
escaping functions is computed.
While doing this, the code was simplified by taking out a boolean()
tag that indicated whether a function is a closure or exported and
also slightly cleaned up the affected modules.
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Prior to R16B, the bs_match_string instruction worked only for cases
that had a destination variable. As shown by the example below, this
is not always the case and the Dst list can be empty.
test(<<42, _/bits>> = B) -> B.
This fixes a bug reported by Loïc Hoguin (02/12/2013); the original
post used a different code example to illustrate the problem.
While revising the code, a significant clean up was also performed.
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* kostis/hipe-icode-range-bug:
Fix bug related to the handling of is_number/1 by the range analysis
Clean up and homogenize text messages for options
OTP-10897
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The following module produced erroneous results when compiled with HiPE:
-module(a).
-export([foo/1]).
foo(X) when is_number(X) ->
is_integer(X).
Running:
1> c(a).
2> a:foo(0).
true
3> hipe:c(a).
4> a:foo(0).
false % *** WRONG ***
The problem was that the 'number' case for the `hipe_icode:type_test/1`
was going to the default case where the argument was determined as being
something other than an integer. Thanks to Sebastian Egner and Johannes
Weißl for bringing the bug into attention. Fixed on the day it was reported.
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* ks/hipe_bif-remove_refs_from/OTP-10851:
Fixed test to allow for lists:foreach/2 call
Change the return value of hipe_bifs:remove_refs_from/1
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* sa/dialyzer-types-arity/OTP-10861:
Minor refactoring
Update Dialyzer's documentation
Support for types with the same name and different arity
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* ks/type-doc-cleanup/OTP-10850:
Add support for printing <<_:_*1>> as bitstring()
Clean up of documentation of type language
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Added: binary_to_integer/1,2, integer_to_binary/1,2
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In order to avoid an ummatched return warning in erts and make the code
more sane, the return value of the bif was changed from [] to 'ok'.
(Probably more hipe_bifs need such changes but they will have to wait.)
While at it, the code of various functions in hipe_unified_loader was
shortened by using lists:foreach/1 instead of explicit recursion.
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The code related to the introduction of unicode_string() and
unicode_char() has been removed. The types char() and string() have
been extended to include Unicode characters.
In fact char() was changed some time ago; this commit is about
cleaning up the documentation and introduce better names for some
functions.
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Dialyzer now understands the "fun(...)" syntax in type specs.
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The type ascii_string() in the base64 module has been corrected.
The type file:file_info() has been cleaned up.
The type file:fd() has been made opaque in the documentation.
The type nodes() has been removed from erl_bif_types.erl.
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* nox/enable-silent-rules/OTP-10726:
Implement ./otp_build configure --enable-silent-rules
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With silent rules, the output of make is less verbose and compilation
warnings are easier to spot. Silent rules are disabled by default and
can be disabled or enabled at will by make V=0 and make V=1.
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