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The compiler would crash when given code such as the following:
Type ::= INTEGER (lower<..<upper)
lower INTEGER ::= 0
lower INTEGER ::= 42
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The only code that is really different between the PER
and UPER backends is encoding of primitive types.
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The wrong backend was used.
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Optimize the decoding of CHOICE. Most important is to inline decoding
of the extension bit (if present) and decoding of the choice index
to give the BEAM compiler more opportunities for optimization.
We will also change the structure of the generated code. The current
code uses a flattened case for both the root and extension alternatives:
case Choice + NumRootChoices * Ext of
%% Root alternatives.
0 - ...;
:
LastRootAlternative -> ...;
%% Extension alternatives.
LastRootAlternative+1 -> ...;
:
%% Unknown extension.
_ -> ...;
end
We will instead generate nested cases:
case Ext of
0 ->
case Choice of
%% Root alternatives.
0 - ...;
:
LastRootAlternative -> ...
end;
1 ->
%% Extension alternatives.
<Decode the open type here>
case Choice of
0 -> ...;
:
LastExtensionAlternative -> ...;
%% Unknown extension.
_ -> ...;
end
end
Nested cases should be slightly faster. For decoding of the extensions,
it also makes it possible to hoist the decoding of the open type up
from each case to before the case switching on the extension index,
thus reducing the size of the generated code.
We will also do another change to the structure. Currently, the
big flat clase is wrapped in code that repackages the return values:
{Alt,{Value,RemainingEncodedData}} =
case Choice + NumRootChoices * Ext of
:
end,
{{Value,Alt},RemainingEncodedData}.
We still need to do the repackaging, but we can push it down to
the case arm for decoding each alternative. In many cases, that
will give the BEAM compiler the opportunity to avoid building the
temporary tuples.
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* maint-r16:
Prepare release
Prepare release
Do not count offline run-queues as empty
Prepare release
Prevent loss of objects after the extension marker
Don't lose the extension mark for object set parameters
Conflicts:
erts/vsn.mk
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* bjorn/asn1/fix-lost-extension-mark/OTP-10995:
Prevent loss of objects after the extension marker
Don't lose the extension mark for object set parameters
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In an object set with a single root object, objects after
the extension marker would be lost.
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When an object set is an actual parameter, the extension marker
for the object set could get lost.
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Characters encoded in latin1 (with no encoding comment) will not
work in R17 since the default encoding will be UTF-8.
The asn1 test suite contains two instances of comments written in
Swedish.
The comment in the .asn1config file is hard to understand and possibly
out-of-date. Since the comment is not essential, simply delete it.
Translate the comment in the other file to English.
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An ENUMERATED with as single value is not encoded. The decoder
incorrectly assumed that it was encoded in one bit.
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Was broken in some backends in R15. Make sure that we will notice
if it breaks again.
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Add the option 'legacy_bit_string' to decode to the old list format.
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The template modules (asn1rtt_*.erl) are based on the existing
run-time modules, but with some simplifications and improvements,
for example:
The run-time functions for BER encoding took a Constraint argument which
was not used. It has been eliminated, along with the unused StringType
argument for the encode_restricted_string function.
The Range argument for decode_enumerated() has been dropped since it
was not used.
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* bjorn/asn1/extension-addition-groups/OTP-10664:
Fix a bug for multiple extension addition groups
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Encoding would fail.
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Support for the notation was removed in 6ef8cbdaaaa1c30a7dc462063.
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The constraint simplification pass need to be seriously rethought
and rewritten.
As a starting point, add a test case to test that equivalent ways
to write a constraint are reduced to the same simplified constraint.
Fix a few obvious bugs to make the test cases to pass.
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Extensions following a double bracket group were not skipped correctly.
Fix this bug and add tests to ensure that extensions are skipped
correctly.
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Decoding of fragmented OCTET STRINGs was only implemented when the size
was constrained to a single value. While at it, support decoding
fragmented OCTET STRINGS in all circumstances.
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It is time to clean up the mess of back-ends.
Remove all the obsolete back-ends and simplify the options used
to select them.
New Option Old Equivalent
---------- --------------
ber ber_bin,optimize,nif
per per,optimize,nif
uper uper_bin
The old options will still be recognized and translated to the
new options, but will also print a warning.
That implies that deprecated features that only are implemented
in the old 'ber' back-end will no longer work (e.g. the
{Typename,Value} notation).
Also make the return type for the generated encode/2 function
consistent. It used to be a binary for per and uper, and an iolist
for ber. Always make it a binary.
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* gustav/asn1/enumerated_n2n/OTP-10144:
Add support for extensible enumeration types in n2n generated functions.
Make n2n option work for enumerated types without extension markers.
Add test enumeration types for testing n2n option when using the name2num
and num2name functions on an enumeration value not in the extension root
of an enumeration type with extension marker.
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* gustav/asn1/integer_single_value_predefined/OTP-10139:
In generation of encoding functions for enumeration types,
the values used for generating the range check in case of
a value range should be sorted and have duplicates removed.
Add sorting in constraint checking on single values.
Conflicts:
lib/asn1/test/testConstraints.erl
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markers. Add test enumeration types for testing n2n option
when using the name2num and num2name functions on an
enumeration value not in the extension root of an
enumeration type with extension marker.
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Fix a bug where a subtyped single value integer type where one or more values
were predefined would result in generated encoding code having faulty range
checks. See seq12102.
OTP-10139
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Encoding and decoding of integer ranges can now be done
with an upper bound larger than the previous limit of 16^10.
The new upper bound in per encoding and decodings for constrained
whole numbers is 2^2040 (close to 16^508) which is the limit if
the length field encoding in the encoding of a constrained
whole number is limited to a single octet.
Related support seq: seq12060
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component relation attribute.
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Conflicts:
lib/asn1/doc/src/notes.xml
lib/asn1/test/asn1_SUITE.erl.src
lib/asn1/test/asn1_SUITE_data/extensionAdditionGroup.erl
lib/asn1/test/test_undecoded_rest.erl
lib/asn1/vsn.mk
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In the previous version support for ExtensionAdditionGroups (i.e [[...]])
was added but it did not handle the occurence of the notation in nested types.
Now this is handled as well and the support is hopefully complete.
Also cleanup of warnings for obsolete guard functions in test suites.
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* kenneth/asn1/nested_extaddgroup/OTP-8797:
Add support for ExtensionAdditionGroup notation in nested types as well
Conflicts:
lib/asn1/test/test_undecoded_rest.erl
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In the previous version support for ExtensionAdditionGroups (i.e [[...]])
was added but it did not handle the occurence of the notation in nested types.
Now this is handled as well and the support is hopefully complete.
Also cleanup of warnings for obsolete guard functions in test suites.
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* maint-r13:
asn1 tests: Remove duplicated SUITE data directories
Update of vsn.mk, relnotes and appup for patch in R13B04 track
Add support for Extension addition group
Conflicts:
lib/asn1/test/Makefile
lib/asn1/test/asn1_SUITE.erl.src
lib/asn1/vsn.mk
OTP-8598
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Some files used by the asn1 test suite had mixed DOS and
Unix line endings.
Noticed-by: Richard Carlsson
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added.
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