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qwebaby3
asn1c
Commits
91313796
Commit
91313796
authored
20 years ago
by
Lev Walkin
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REAL type is now supported
parent
bac01327
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BUGS
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91313796
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@@ -5,30 +5,28 @@ known. Not a huge problem for run-once programs like a compiler.
NOTE: This statement does not apply to the target code _produced_
by the compiler.
1. REAL type is not supported yet.
2. For purposes of compilation, INTEGER type is modelled using a large
1. For purposes of compilation, INTEGER type is modelled using a large
static type (asn_integer_t), but defined as any positive or negative value
by ASN.1. Not a problem as most specifications use very small values anyway.
NOTE: This statement does not apply to the target code _produced_
by the compiler.
3
. ASN Macros are prohibited by the current ASN.1 standard,
2
. ASN Macros are prohibited by the current ASN.1 standard,
and are not supported.
4
. Multiple tags applied at the same level are not supported:
3
. Multiple tags applied at the same level are not supported:
BadTags ::= [0] EXPLICIT [2] IMPLICIT OtherType
The same thing could be achieved by using the indirection:
GoodTags ::= [0] EXPLICIT OtherTypePtr
OtherTypePtr ::= [2] IMPLICIT OtherType
5
. Mixed definite/indefinite length in a _single_ BER tags sequence is not
4
. Mixed definite/indefinite length in a _single_ BER tags sequence is not
supported. Should not be a problem in the real world. Please note that it
is still possible, for example, to encode a wrapper structure using definite
length, and encode its substructure member using indefinite length. The BER
decoder is perfectly capable of decoding such sequences.
6
. Encoding or decoding of structures with combined length greater than 16MB
5
. Encoding or decoding of structures with combined length greater than 16MB
is not tested. There are some size determination bugs lurking in the produced
code, which may cause integer overflow in certain edge cases. This restriction
should not cause a problem in the real world, as higher level protocol typically
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