diff --git a/doc/asn1c-usage.html b/doc/asn1c-usage.html
index 56af9ea6423751078e77a1cc6fb2fd7b4b08c534..ef399debcf1058c6ff4d092dcf40a15697c6199b 100644
--- a/doc/asn1c-usage.html
+++ b/doc/asn1c-usage.html
@@ -6,9 +6,9 @@ original version by: Nikos Drakos, CBLU, University of Leeds
Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
<HTML>
<HEAD>
-<TITLE>Using the OpenSource ASN.1 Compiler</TITLE>
-<META NAME="description" CONTENT="Using the OpenSource ASN.1 Compiler">
-<META NAME="asn1c, ASN.1, free, compiler, BER, DER, PER, XER\">
+<TITLE>Using the Open Source ASN.1 Compiler</TITLE>
+<META NAME="description" CONTENT="Using the Open Source ASN.1 Compiler">
+<META NAME="ASN.1, asn1c, compiler, BER, DER, XER\">
@@ -21,7 +21,7 @@ original version by: Nikos Drakos, CBLU, University of Leeds
<P>
<P>
-<H1 ALIGN="CENTER">Using the OpenSource ASN.1 Compiler</H1><DIV>
+<H1 ALIGN="CENTER">Using the Open Source ASN.1 Compiler</H1><DIV>
<P ALIGN="CENTER"><STRONG>Lev Walkin <<A HREF=mailto:vlm@lionet.info?Subject=asn1c>vlm@lionet.info</A>></STRONG></P>
</DIV>
@@ -41,103 +41,109 @@ Contents</A>
<!--Table of Contents-->
<UL>
-<LI><A NAME="tex2html50"
+<LI><A NAME="tex2html53"
HREF="asn1c-usage.html#SECTION02000000000000000000">ASN.1 Basics</A>
<UL>
-<LI><A NAME="tex2html51"
+<LI><A NAME="tex2html54"
HREF="asn1c-usage.html#SECTION02100000000000000000">Abstract Syntax Notation: ASN.1</A>
<UL>
-<LI><A NAME="tex2html52"
+<LI><A NAME="tex2html55"
HREF="asn1c-usage.html#SECTION02110000000000000000">Some of the ASN.1 Basic Types</A>
<UL>
-<LI><A NAME="tex2html53"
+<LI><A NAME="tex2html56"
HREF="asn1c-usage.html#SECTION02111000000000000000">The BOOLEAN type</A>
-<LI><A NAME="tex2html54"
+<LI><A NAME="tex2html57"
HREF="asn1c-usage.html#SECTION02112000000000000000">The INTEGER type</A>
-<LI><A NAME="tex2html55"
+<LI><A NAME="tex2html58"
HREF="asn1c-usage.html#SECTION02113000000000000000">The ENUMERATED type</A>
-<LI><A NAME="tex2html56"
+<LI><A NAME="tex2html59"
HREF="asn1c-usage.html#SECTION02114000000000000000">The OCTET STRING type</A>
-<LI><A NAME="tex2html57"
+<LI><A NAME="tex2html60"
HREF="asn1c-usage.html#SECTION02115000000000000000">The OBJECT IDENTIFIER type</A>
-<LI><A NAME="tex2html58"
+<LI><A NAME="tex2html61"
HREF="asn1c-usage.html#SECTION02116000000000000000">The RELATIVE-OID type</A>
</UL>
-<LI><A NAME="tex2html59"
+<LI><A NAME="tex2html62"
HREF="asn1c-usage.html#SECTION02120000000000000000">Some of the ASN.1 String Types</A>
<UL>
-<LI><A NAME="tex2html60"
+<LI><A NAME="tex2html63"
HREF="asn1c-usage.html#SECTION02121000000000000000">The IA5String type</A>
-<LI><A NAME="tex2html61"
+<LI><A NAME="tex2html64"
HREF="asn1c-usage.html#SECTION02122000000000000000">The UTF8String type</A>
-<LI><A NAME="tex2html62"
+<LI><A NAME="tex2html65"
HREF="asn1c-usage.html#SECTION02123000000000000000">The NumericString type</A>
-<LI><A NAME="tex2html63"
+<LI><A NAME="tex2html66"
HREF="asn1c-usage.html#SECTION02124000000000000000">The PrintableString type</A>
-<LI><A NAME="tex2html64"
+<LI><A NAME="tex2html67"
HREF="asn1c-usage.html#SECTION02125000000000000000">The VisibleString type</A>
</UL>
-<LI><A NAME="tex2html65"
+<LI><A NAME="tex2html68"
HREF="asn1c-usage.html#SECTION02130000000000000000">ASN.1 Constructed Types</A>
<UL>
-<LI><A NAME="tex2html66"
+<LI><A NAME="tex2html69"
HREF="asn1c-usage.html#SECTION02131000000000000000">The SEQUENCE type</A>
-<LI><A NAME="tex2html67"
+<LI><A NAME="tex2html70"
HREF="asn1c-usage.html#SECTION02132000000000000000">The SET type</A>
-<LI><A NAME="tex2html68"
+<LI><A NAME="tex2html71"
HREF="asn1c-usage.html#SECTION02133000000000000000">The CHOICE type</A>
-<LI><A NAME="tex2html69"
+<LI><A NAME="tex2html72"
HREF="asn1c-usage.html#SECTION02134000000000000000">The SEQUENCE OF type</A>
-<LI><A NAME="tex2html70"
+<LI><A NAME="tex2html73"
HREF="asn1c-usage.html#SECTION02135000000000000000">The SET OF type</A>
</UL>
</UL>
</UL><BR>
-<LI><A NAME="tex2html71"
+<LI><A NAME="tex2html74"
HREF="asn1c-usage.html#SECTION03000000000000000000">Using the ASN.1 Compiler</A>
<UL>
-<LI><A NAME="tex2html72"
+<LI><A NAME="tex2html75"
HREF="asn1c-usage.html#SECTION03100000000000000000">Introduction to the ASN.1 Compiler</A>
-<LI><A NAME="tex2html73"
+<LI><A NAME="tex2html76"
HREF="asn1c-usage.html#SECTION03200000000000000000">Quick start</A>
-<LI><A NAME="tex2html74"
+<LI><A NAME="tex2html77"
HREF="asn1c-usage.html#SECTION03300000000000000000">Using the ASN.1 Compiler</A>
<UL>
-<LI><A NAME="tex2html75"
+<LI><A NAME="tex2html78"
HREF="asn1c-usage.html#SECTION03310000000000000000">Command-line options</A>
-<LI><A NAME="tex2html76"
+<LI><A NAME="tex2html79"
HREF="asn1c-usage.html#SECTION03320000000000000000">Recognizing compiler output</A>
-<LI><A NAME="tex2html77"
+<LI><A NAME="tex2html80"
HREF="asn1c-usage.html#SECTION03330000000000000000">Invoking the ASN.1 helper code from an application</A>
<UL>
-<LI><A NAME="tex2html78"
+<LI><A NAME="tex2html81"
HREF="asn1c-usage.html#SECTION03331000000000000000">Decoding BER</A>
-<LI><A NAME="tex2html79"
+<LI><A NAME="tex2html82"
HREF="asn1c-usage.html#SECTION03332000000000000000">Encoding DER</A>
-<LI><A NAME="tex2html80"
+<LI><A NAME="tex2html83"
HREF="asn1c-usage.html#SECTION03333000000000000000">Encoding XER</A>
-<LI><A NAME="tex2html81"
+<LI><A NAME="tex2html84"
HREF="asn1c-usage.html#SECTION03334000000000000000">Validating the target structure</A>
-<LI><A NAME="tex2html82"
+<LI><A NAME="tex2html85"
HREF="asn1c-usage.html#SECTION03335000000000000000">Printing the target structure</A>
-<LI><A NAME="tex2html83"
+<LI><A NAME="tex2html86"
HREF="asn1c-usage.html#SECTION03336000000000000000">Freeing the target structure</A>
</UL>
</UL>
</UL><BR>
-<LI><A NAME="tex2html84"
+<LI><A NAME="tex2html87"
HREF="asn1c-usage.html#SECTION04000000000000000000">Examples</A>
<UL>
-<LI><A NAME="tex2html85"
+<LI><A NAME="tex2html88"
HREF="asn1c-usage.html#SECTION04100000000000000000">Step by step examples</A>
<UL>
-<LI><A NAME="tex2html86"
+<LI><A NAME="tex2html89"
HREF="asn1c-usage.html#SECTION04110000000000000000">A ''Rectangle'' Encoder</A>
-<LI><A NAME="tex2html87"
+<LI><A NAME="tex2html90"
HREF="asn1c-usage.html#SECTION04120000000000000000">A ''Rectangle'' Decoder</A>
</UL>
+<LI><A NAME="tex2html91"
+ HREF="asn1c-usage.html#SECTION04200000000000000000">Constraint validation examples</A>
+<UL>
+<LI><A NAME="tex2html92"
+ HREF="asn1c-usage.html#SECTION04210000000000000000">Adding constraints into ''Rectangle'' type</A>
+</UL>
</UL><BR>
-<LI><A NAME="tex2html88"
+<LI><A NAME="tex2html93"
HREF="asn1c-usage.html#SECTION05000000000000000000">Bibliography</A>
</UL>
<!--End of Table of Contents-->
@@ -580,7 +586,7 @@ language structures and surrounding maintenance code. For example,
the C structure which may be created by compiler to represent the
simple <I>Rectangle</I> specification defined earlier in this document,
may look like this<A NAME="tex2html2"
- HREF="#foot739"><SUP>2.2</SUP></A>:
+ HREF="#foot801"><SUP>2.2</SUP></A>:
<P>
@@ -606,8 +612,8 @@ Quick start</A>
<P>
After building and installing the compiler, the <I>asn1c</I><A NAME="tex2html4"
- HREF="#foot740"><SUP>3.1</SUP></A> command may be used to compile the ASN.1 specification<A NAME="tex2html5"
- HREF="#foot741"><SUP>3.2</SUP></A>:
+ HREF="#foot802"><SUP>3.1</SUP></A> command may be used to compile the ASN.1 specification<A NAME="tex2html5"
+ HREF="#foot803"><SUP>3.2</SUP></A>:
<P>
@@ -673,7 +679,7 @@ the compiler's behavior.
<P>
<BR><P></P>
-<DIV ALIGN="CENTER"><A NAME="744"></A>
+<DIV ALIGN="CENTER"><A NAME="806"></A>
<TABLE>
<CAPTION><STRONG><A NAME=Table1>Table 1:</A></STRONG>
The list of asn1c command line options</CAPTION>
@@ -817,7 +823,7 @@ be possible to compile everything with the single instruction:
<BLOCKQUOTE><PRE>
cc -o rectangle *.c # It could be <I>that</I> simple<A NAME="tex2html7"
- HREF="#foot747"><SUP>4.1</SUP></A>
+ HREF="#foot809"><SUP>4.1</SUP></A>
</PRE>
</BLOCKQUOTE>
@@ -1295,8 +1301,8 @@ Examples</A>
<P>
-<H1><A NAME="SECTION04100000000000000000">
-Step by step examples</A>
+<H1><A NAME="SECTION04100000000000000000"></A><A NAME="cha:Step-by-step-examples"></A><BR>
+Step by step examples
</H1>
<P>
@@ -1306,7 +1312,7 @@ A ''Rectangle'' Encoder</A>
</H1>
<P>
-This chapter will help you to create a simple BER and XER encoder
+This example will help you to create a simple BER and XER encoder
of a ''Rectangle'' type used throughout this document.
<P>
@@ -1379,7 +1385,7 @@ the file <B>main.c</B>:
<FONT SIZE="-1"> asn_enc_rval_t ec; /* Encoder return value */</FONT>
<FONT SIZE="-1"> /* Allocate the Rectangle_t */</FONT>
- <FONT SIZE="-1"> rectangle = calloc(1, sizeof(Rectangle_t); /* not malloc! */</FONT>
+ <FONT SIZE="-1"> rectangle = calloc(1, sizeof(Rectangle_t)); /* not malloc! */</FONT>
<FONT SIZE="-1"> if(!rectangle) {</FONT>
<FONT SIZE="-1"> perror(''calloc() failed'');</FONT>
<FONT SIZE="-1"> exit(71); /* better, EX_OSERR */</FONT>
@@ -1443,12 +1449,12 @@ type, named <B>rencode</B>!
<P>
-<H1><A NAME="SECTION04120000000000000000">
-A ''Rectangle'' Decoder</A>
+<H1><A NAME="SECTION04120000000000000000"></A><A NAME="sec:A-Rectangle-Decoder"></A><BR>
+A ''Rectangle'' Decoder
</H1>
<P>
-This chapter will help you to create a simple BER decoder of a simple
+This example will help you to create a simple BER decoder of a simple
''Rectangle'' type used throughout this document.
<P>
@@ -1565,11 +1571,90 @@ it as it were a BER-encoded Rectangle type, and prints out the text
<LI>Voila! You have just created the BER decoder of a Rectangle type,
named <B>rdecode</B>!
</LI>
+</OL>
+
+<P>
+
+<H1><A NAME="SECTION04200000000000000000">
+Constraint validation examples</A>
+</H1>
+
+<P>
+This chapter shows how to define ASN.1 constraints and use the generated
+validation code.
+
+<P>
+
+<H1><A NAME="SECTION04210000000000000000">
+Adding constraints into ''Rectangle'' type</A>
+</H1>
+
+<P>
+This example shows how to add basic constraints to the ASN.1 specification
+and how to invoke the constraints validation code in your application.
+
+<P>
+
+<OL>
+<LI>Create a file named <B>rectangle.asn1</B> with the following contents:
+
+<P>
+
+<BLOCKQUOTE><PRE>
+RectangleModuleWithConstraints DEFINITIONS ::=
+BEGIN
+
+Rectangle ::= SEQUENCE {
+ height INTEGER (0..100), -- Value range constraint
+ width INTEGER (0..MAX) -- Makes width non-negative
+}
+
+END
+</PRE>
+</BLOCKQUOTE>
+
+</LI>
+<LI>Compile the file according to procedures shown in the previous chapter.
+</LI>
+<LI>Modify the Rectangle type processing routine (you can start with the
+main() routine shown in the Section sec:A-Rectangle-Decoder)
+by placing the following snippet of code <I>before</I> encoding and/or
+<I>after</I> decoding the Rectangle type<A NAME="tex2html10"
+ HREF="#foot874"><SUP>6.1</SUP></A>:
+
+<P>
+
+<BLOCKQUOTE><PRE>
+<FONT SIZE="-1">int ret; /* Return value */</FONT>
+<FONT SIZE="-1">char errbuf[128]; /* Buffer for error message */</FONT>
+<FONT SIZE="-1">size_t errlen = sizeof(errbuf); /* Size of the buffer */</FONT>
+ <FONT SIZE="-1"> </FONT>
+<FONT SIZE="-1">/* ... here may go Rectangle decoding code ... */</FONT>
+
+<FONT SIZE="-1">ret = asn_check_constraints(asn_DEF_Rectangle,</FONT>
+ <FONT SIZE="-1"> rectangle, errbuf, &errlen);</FONT>
+<FONT SIZE="-1">/* assert(errlen < sizeof(errbuf)); // you may rely on that */</FONT>
+<FONT SIZE="-1">if(ret) {</FONT>
+ <FONT SIZE="-1"> fprintf(stderr, ''Constraint validation failed: %s\n'',</FONT>
+ <FONT SIZE="-1"> errbuf /* errbuf is properly nul-terminated */</FONT>
+ <FONT SIZE="-1"> );</FONT>
+ <FONT SIZE="-1"> /* exit(...); // Replace with appropriate action */</FONT>
+<FONT SIZE="-1">}</FONT>
+
+<FONT SIZE="-1">/* ... here may go Rectangle encoding code ... */</FONT>
+</PRE>
+</BLOCKQUOTE>
+
+</LI>
+<LI>Compile the resulting C code as shown in the previous chapters.
+</LI>
+<LI>Done.
+</LI>
</OL>
<H2><A NAME="SECTION05000000000000000000">
Bibliography</A>
</H2><DL COMPACT><DD><P></P><DT><A NAME="ASN1C">ASN1C</A>
-<DD>The OpenSource ASN.1 Compiler. <A HREF=http://lionet.info/asn1c/>http://lionet.info/asn1c/</A>
+<DD>The Open Source ASN.1 Compiler. <A HREF=http://lionet.info/>http://lionet.info/</A>asn1c
<P></P><DT><A NAME="AONL">AONL</A>
<DD>Online ASN.1 Compiler. <A HREF=http://lionet.info/asn1c/>http://lionet.info/asn1c/</A>asn1c.cgi
<P></P><DT><A NAME="Dub00">Dub00</A>
@@ -1577,7 +1662,8 @@ Bibliography</A>
systems</I> -- Morgan Kaufmann Publishers, 2000. <A HREF=http://asn1.elibel.tm.fr/en/book/>http://asn1.elibel.tm.fr/en/book/</A>.
ISBN:0-12-6333361-0.
<P></P><DT><A NAME="ITU-T_ASN.1">ITU-T/ASN.1</A>
-<DD>ITU-T Study Group 17 - Languages for Telecommunication Systems <A HREF=http://www.itu.int/ITU-T/studygroups/com17/languages/>http://www.itu.int/ITU-T/studygroups/com17/languages/</A></DL>
+<DD>ITU-T Study Group 17 - Languages for Telecommunication Systems <A HREF=http://www.itu.int/ITU-T/studygroups/com17/languages/>http://www.itu.int/ITU-T/studygroups/com17/languages/</A>
+</DL>
<P>
<BR><HR><H4>Footnotes</H4>
@@ -1588,7 +1674,7 @@ ISBN:0-12-6333361-0.
not a definitive factor.
</DD>
-<DT><A NAME="foot739">... this</A><A
+<DT><A NAME="foot801">... this</A><A
HREF="asn1c-usage.html#tex2html2"><SUP>2.2</SUP></A></DT>
<DD><I>-fnative-types</I> compiler option is used to produce basic C <I>int</I>
types instead of infinite width INTEGER_t structures. See <A HREF=#Table1>Table 1</A>.
@@ -1600,19 +1686,19 @@ types instead of infinite width INTEGER_t structures. See <A HREF=#Table1>Table
text (XML) based.
</DD>
-<DT><A NAME="foot740">...asn1c</A><A
+<DT><A NAME="foot802">...asn1c</A><A
HREF="asn1c-usage.html#tex2html4"><SUP>3.1</SUP></A></DT>
<DD>The 1 symbol in asn<B>1</B>c is a digit, not an ''ell'' letter.
</DD>
-<DT><A NAME="foot741">... specification</A><A
+<DT><A NAME="foot803">... specification</A><A
HREF="asn1c-usage.html#tex2html5"><SUP>3.2</SUP></A></DT>
<DD>This is probably <B>not</B> what you want to try out right now -
read through the rest of this chapter to find out about <B>-P</B>
and <B>-R</B> options.
</DD>
-<DT><A NAME="foot747">...that simple</A><A
+<DT><A NAME="foot809">...that simple</A><A
HREF="asn1c-usage.html#tex2html7"><SUP>4.1</SUP></A></DT>
<DD>Provided that you've also created a .c file with the <I>int main()</I>
routine.
@@ -1630,11 +1716,23 @@ buffer to continue decoding.
<DD>It is actually faster too: the encoder might skip over some computations
which aren't important for the size determination.
+</DD>
+<DT><A NAME="foot874">... type</A><A
+ HREF="asn1c-usage.html#tex2html10"><SUP>6.1</SUP></A></DT>
+<DD>Placing the constraint checking code <I>before</I> encoding helps
+to make sure you know the data is correct and within constraints before
+sharing the data with anyone else.
+
+<P>
+Placing the constraint checking code <I>after</I> decoding, but before
+any further action depending on the decoded data, helps to make sure
+the application got the valid contents before making use of it.
+
</DD>
</DL><BR><HR>
<ADDRESS>
Lev Walkin
-2005-01-31
+2005-02-02
</ADDRESS>
</BODY>
</HTML>
diff --git a/doc/asn1c-usage.lyx b/doc/asn1c-usage.lyx
index a6c82ae15de0652b335f1bfaf095912c34f9a06c..044d3438cf78e8651129668ee702e18cea4344d6 100644
--- a/doc/asn1c-usage.lyx
+++ b/doc/asn1c-usage.lyx
@@ -12,7 +12,7 @@
linkcolor={gray40},
urlcolor={urlblue},
pdfauthor={Lev Walkin},
-pdftitle={Using the OpenSource ASN.1 Compiler},
+pdftitle={Using the Open Source ASN.1 Compiler},
pdfkeywords={ASN.1,asn1c,compiler}
]{hyperref}
%\fancyhf{}
@@ -46,7 +46,7 @@ pdfkeywords={ASN.1,asn1c,compiler}
\layout Title
-Using the OpenSource ASN.1 Compiler
+Using the Open Source ASN.1 Compiler
\layout Author
Lev Walkin <
@@ -2740,6 +2740,11 @@ free_struct
Examples
\layout Chapter
+
+\begin_inset LatexCommand \label{cha:Step-by-step-examples}
+
+\end_inset
+
Step by step examples
\layout Section
@@ -2754,7 +2759,7 @@ Rectangle
Encoder
\layout Standard
-This chapter will help you to create a simple BER and XER encoder of a
+This example will help you to create a simple BER and XER encoder of a
\begin_inset Quotes sld
\end_inset
@@ -2976,7 +2981,7 @@ int main(int ac, char **av) {
\size small
- rectangle = calloc(1, sizeof(Rectangle_t); /* not malloc! */
+ rectangle = calloc(1, sizeof(Rectangle_t)); /* not malloc! */
\layout LyX-Code
@@ -3273,6 +3278,11 @@ clearpage{}
\layout Section
+
+\begin_inset LatexCommand \label{sec:A-Rectangle-Decoder}
+
+\end_inset
+
A
\begin_inset Quotes sld
\end_inset
@@ -3284,7 +3294,7 @@ Rectangle
Decoder
\layout Standard
-This chapter will help you to create a simple BER decoder of a simple
+This example will help you to create a simple BER decoder of a simple
\begin_inset Quotes sld
\end_inset
@@ -3382,7 +3392,7 @@ main.c
\series default
:
\begin_inset ERT
-status Open
+status Collapsed
\layout Standard
@@ -3704,12 +3714,230 @@ Voila! You have just created the BER decoder of a Rectangle type, named
rdecode
\series default
!
+\layout Chapter
+
+Constraint validation examples
+\layout Standard
+
+This chapter shows how to define ASN.1 constraints and use the generated
+ validation code.
+\layout Section
+
+Adding constraints into
+\begin_inset Quotes sld
+\end_inset
+
+Rectangle
+\begin_inset Quotes srd
+\end_inset
+
+ type
+\layout Standard
+
+This example shows how to add basic constraints to the ASN.1 specification
+ and how to invoke the constraints validation code in your application.
+\layout Enumerate
+
+Create a file named
+\series bold
+rectangle.asn1
+\series default
+ with the following contents:
+\begin_deeper
+\layout LyX-Code
+
+RectangleModuleWithConstraints DEFINITIONS ::=
+\layout LyX-Code
+
+BEGIN
+\layout LyX-Code
+
+
+\layout LyX-Code
+
+Rectangle ::= SEQUENCE {
+\layout LyX-Code
+
+ height INTEGER (0..100), -- Value range constraint
+\layout LyX-Code
+
+ width INTEGER (0..MAX) -- Makes width non-negative
+\layout LyX-Code
+
+}
+\layout LyX-Code
+
+
+\layout LyX-Code
+
+END
+\end_deeper
+\layout Enumerate
+
+Compile the file according to procedures shown in the previous chapter.
+\layout Enumerate
+
+Modify the Rectangle type processing routine (you can start with the main()
+ routine shown in the Section
+\begin_inset LatexCommand \vref{sec:A-Rectangle-Decoder}
+
+\end_inset
+
+) by placing the following snippet of code
+\emph on
+before
+\emph default
+ encoding and/or
+\emph on
+after
+\emph default
+ decoding the Rectangle type
+\begin_inset Foot
+collapsed true
+
+\layout Standard
+
+Placing the constraint checking code
+\emph on
+before
+\emph default
+ encoding helps to make sure you know the data is correct and within constraints
+ before sharing the data with anyone else.
+\layout Standard
+
+Placing the constraint checking code
+\emph on
+after
+\emph default
+ decoding, but before any further action depending on the decoded data,
+ helps to make sure the application got the valid contents before making
+ use of it.
+\end_inset
+
+:
+\begin_inset ERT
+status Collapsed
+
+\layout Standard
+
+\backslash
+clearpage{}
+\end_inset
+
+
+\begin_deeper
+\layout LyX-Code
+
+
+\size small
+int ret; /* Return value */
+\layout LyX-Code
+
+
+\size small
+char errbuf[128]; /* Buffer for error message */
+\layout LyX-Code
+
+
+\size small
+size_t errlen = sizeof(errbuf); /* Size of the buffer */
+\layout LyX-Code
+
+
+\size small
+
+\layout LyX-Code
+
+
+\size small
+/* ...
+ here may go Rectangle decoding code ...
+ */
+\layout LyX-Code
+
+
+\size small
+
+\layout LyX-Code
+
+
+\size small
+ret = asn_check_constraints(asn_DEF_Rectangle,
+\layout LyX-Code
+
+
+\size small
+ rectangle, errbuf, &errlen);
+\layout LyX-Code
+
+
+\size small
+/* assert(errlen < sizeof(errbuf)); // you may rely on that */
+\layout LyX-Code
+
+
+\size small
+if(ret) {
+\layout LyX-Code
+
+
+\size small
+ fprintf(stderr,
+\begin_inset Quotes sld
+\end_inset
+
+Constraint validation failed: %s
+\backslash
+n
+\begin_inset Quotes srd
+\end_inset
+
+,
+\layout LyX-Code
+
+
+\size small
+ errbuf /* errbuf is properly nul-terminated */
+\layout LyX-Code
+
+
+\size small
+ );
+\layout LyX-Code
+
+
+\size small
+ /* exit(...); // Replace with appropriate action */
+\layout LyX-Code
+
+
+\size small
+}
+\layout LyX-Code
+
+
+\size small
+
+\layout LyX-Code
+
+
+\size small
+/* ...
+ here may go Rectangle encoding code ...
+ */
+\end_deeper
+\layout Enumerate
+
+Compile the resulting C code as shown in the previous chapters.
+\layout Enumerate
+
+Done.
\layout Bibliography
\bibitem [ASN1C]{ASN1C}
-The OpenSource ASN.1 Compiler.
+The Open Source ASN.1 Compiler.
-\begin_inset LatexCommand \htmlurl{http://lionet.info/asn1c/}
+\begin_inset LatexCommand \htmlurl{http://lionet.info/asn1c}
\end_inset
diff --git a/doc/asn1c-usage.pdf b/doc/asn1c-usage.pdf
index f685e01f3946a2b915e1f30d8504897715316fbe..4fd5cf78a899c701ced54e03f975ee55d6904e22 100644
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