Re: [PATCH v3] xen: Add MISRA support to cppcheck make rule

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 22 Jun 2022, Bertrand Marquis wrote:
> Hi Stefano,
> 
> > On 22 Jun 2022, at 01:00, Stefano Stabellini <sstabellini@xxxxxxxxxx> wrote:
> > 
> > On Fri, 10 Jun 2022, Bertrand Marquis wrote:
> >> cppcheck MISRA addon can be used to check for non compliance to some of
> >> the MISRA standard rules.
> >> 
> >> Add a CPPCHECK_MISRA variable that can be set to "y" using make command
> >> line to generate a cppcheck report including cppcheck misra checks.
> >> 
> >> When MISRA checking is enabled, a file with a text description suitable
> >> for cppcheck misra addon is generated out of Xen documentation file
> >> which lists the rules followed by Xen (docs/misra/rules.rst).
> >> 
> >> By default MISRA checking is turned off.
> >> 
> >> While adding cppcheck-misra files to gitignore, also fix the missing /
> >> for htmlreport gitignore
> >> 
> >> Signed-off-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
> > 
> > Hi Bertrand,
> > 
> > I tried this patch and I am a bit confused by the output
> > cppcheck-misra.txt file that I get (appended.)
> > 
> > I can see that there are all the rules from docs/misra/rules.rst as it
> > should be together with the one line summary, but there are also a bunch
> > of additional rules not present in docs/misra/rules.rst. Starting from
> > Rule 1.1 all the way to Rule 21.21. Is the expected?
> 
> To make cppcheck happy I need to give a text for all rules so the python 
> script is generating a dummy sentence for not declared Misra rules to prevent 
> cppcheck warnings. To make it simpler I just did it for 1 to 22 for main and 
> sub numbers.
> 
> So yes this is expected.

No problem about the dummy text sentence. My question was why are all
those additional rules listed?

If you see below, the first few rules from 2.1 to 20.14 are coming from
docs/misra/rules.rst. Why are the other rules afterward from 1.1 to
21.21 listed and where are they coming from?

Is it because all rules need to be listed? And the ones that are enabled
are marked as "Required"?

I take we couldn't just avoid listing the other rules (the ones not in
docs/misra/rules.rst)?


> > Appendix A Summary of guidelines
> > Rule 2.1 Required
> > All source files shall compile without any compilation errors (Misra rule 
> > 2.1)
> > Rule 4.7 Required
> > If a function returns error information then that error information shall 
> > be tested (Misra rule 4.7)
> > Rule 4.10 Required
> > Precautions shall be taken in order to prevent the contents of a header 
> > file being included more than once (Misra rule 4.10)
> > Rule 4.14 Required
> > The validity of values received from external sources shall be checked 
> > (Misra rule 4.14)
> > Rule 1.3 Required
> > There shall be no occurrence of undefined or critical unspecified behaviour 
> > (Misra rule 1.3)
> > Rule 3.2 Required
> > Line-splicing shall not be used in // comments (Misra rule 3.2)
> > Rule 5.1 Required
> > External identifiers shall be distinct (Misra rule 5.1)
> > Rule 5.2 Required
> > Identifiers declared in the same scope and name space shall be distinct 
> > (Misra rule 5.2)
> > Rule 5.3 Required
> > An identifier declared in an inner scope shall not hide an identifier 
> > declared in an outer scope (Misra rule 5.3)
> > Rule 5.4 Required
> > Macro identifiers shall be distinct (Misra rule 5.4)
> > Rule 6.2 Required
> > Single-bit named bit fields shall not be of a signed type (Misra rule 6.2)
> > Rule 8.1 Required
> > Types shall be explicitly specified (Misra rule 8.1)
> > Rule 8.4 Required
> > A compatible declaration shall be visible when an object or function with 
> > external linkage is defined (Misra rule 8.4)
> > Rule 8.5 Required
> > An external object or function shall be declared once in one and only one 
> > file (Misra rule 8.5)
> > Rule 8.6 Required
> > An identifier with external linkage shall have exactly one external 
> > definition (Misra rule 8.6)
> > Rule 8.8 Required
> > The static storage class specifier shall be used in all declarations of 
> > objects and functions that have internal linkage (Misra rule 8.8)
> > Rule 8.10 Required
> > An inline function shall be declared with the static storage class (Misra 
> > rule 8.10)
> > Rule 8.12 Required
> > Within an enumerator list the value of an implicitly-specified enumeration 
> > constant shall be unique (Misra rule 8.12)
> > Rule 9.1 Mandatory
> > The value of an object with automatic storage duration shall not be read 
> > before it has been set (Misra rule 9.1)
> > Rule 9.2 Required
> > The initializer for an aggregate or union shall be enclosed in braces 
> > (Misra rule 9.2)
> > Rule 13.6 Mandatory
> > The operand of the sizeof operator shall not contain any expression which 
> > has potential side effects (Misra rule 13.6)
> > Rule 14.1 Required
> > A loop counter shall not have essentially floating type (Misra rule 14.1)
> > Rule 16.7 Required
> > A switch-expression shall not have essentially Boolean type (Misra rule 
> > 16.7)
> > Rule 17.3 Mandatory
> > A function shall not be declared implicitly (Misra rule 17.3)
> > Rule 17.4 Mandatory
> > All exit paths from a function with non-void return type shall have an 
> > explicit return statement with an expression (Misra rule 17.4)
> > Rule 20.7 Required
> > Expressions resulting from the expansion of macro parameters shall be 
> > enclosed in parentheses (Misra rule 20.7)
> > Rule 20.13 Required
> > A line whose first token is # shall be a valid preprocessing directive 
> > (Misra rule 20.13)
> > Rule 20.14 Required
> > All #else #elif and #endif preprocessor directives shall reside in the same 
> > file as the #if #ifdef or #ifndef directive to which they are related 
> > (Misra rule 20.14)
> > Rule 1.1
> > No description for rule 1.1
> > Rule 1.2
> > No description for rule 1.2
> > Rule 1.4
> > No description for rule 1.4
> > Rule 1.5
> > No description for rule 1.5
> > Rule 1.6
> > No description for rule 1.6
> > Rule 1.7
> > No description for rule 1.7
> > Rule 1.8
> > No description for rule 1.8
> > Rule 1.9
> > No description for rule 1.9
> > Rule 1.10
> > No description for rule 1.10
> > Rule 1.11
> > No description for rule 1.11
> > Rule 1.12
> > No description for rule 1.12
> > Rule 1.13
> > No description for rule 1.13
> > Rule 1.14
> > No description for rule 1.14
> > Rule 1.15
> > No description for rule 1.15
> > Rule 1.16
> > No description for rule 1.16
> > Rule 1.17
> > No description for rule 1.17
> > Rule 1.18
> > No description for rule 1.18
> > Rule 1.19
> > No description for rule 1.19
> > Rule 1.20
> > No description for rule 1.20
> > Rule 1.21
> > No description for rule 1.21
> > Rule 2.2
> > No description for rule 2.2
> > Rule 2.3
> > No description for rule 2.3
> > Rule 2.4
> > No description for rule 2.4
> > Rule 2.5
> > No description for rule 2.5
> > Rule 2.6
> > No description for rule 2.6
> > Rule 2.7
> > No description for rule 2.7
> > Rule 2.8
> > No description for rule 2.8
> > Rule 2.9
> > No description for rule 2.9
> > Rule 2.10
> > No description for rule 2.10
> > Rule 2.11
> > No description for rule 2.11
> > Rule 2.12
> > No description for rule 2.12
> > Rule 2.13
> > No description for rule 2.13
> > Rule 2.14
> > No description for rule 2.14
> > Rule 2.15
> > No description for rule 2.15
> > Rule 2.16
> > No description for rule 2.16
> > Rule 2.17
> > No description for rule 2.17
> > Rule 2.18
> > No description for rule 2.18
> > Rule 2.19
> > No description for rule 2.19
> > Rule 2.20
> > No description for rule 2.20
> > Rule 2.21
> > No description for rule 2.21
> > Rule 3.1
> > No description for rule 3.1
> > Rule 3.3
> > No description for rule 3.3
> > Rule 3.4
> > No description for rule 3.4
> > Rule 3.5
> > No description for rule 3.5
> > Rule 3.6
> > No description for rule 3.6
> > Rule 3.7
> > No description for rule 3.7
> > Rule 3.8
> > No description for rule 3.8
> > Rule 3.9
> > No description for rule 3.9
> > Rule 3.10
> > No description for rule 3.10
> > Rule 3.11
> > No description for rule 3.11
> > Rule 3.12
> > No description for rule 3.12
> > Rule 3.13
> > No description for rule 3.13
> > Rule 3.14
> > No description for rule 3.14
> > Rule 3.15
> > No description for rule 3.15
> > Rule 3.16
> > No description for rule 3.16
> > Rule 3.17
> > No description for rule 3.17
> > Rule 3.18
> > No description for rule 3.18
> > Rule 3.19
> > No description for rule 3.19
> > Rule 3.20
> > No description for rule 3.20
> > Rule 3.21
> > No description for rule 3.21
> > Rule 4.1
> > No description for rule 4.1
> > Rule 4.2
> > No description for rule 4.2
> > Rule 4.3
> > No description for rule 4.3
> > Rule 4.4
> > No description for rule 4.4
> > Rule 4.5
> > No description for rule 4.5
> > Rule 4.6
> > No description for rule 4.6
> > Rule 4.8
> > No description for rule 4.8
> > Rule 4.9
> > No description for rule 4.9
> > Rule 4.11
> > No description for rule 4.11
> > Rule 4.12
> > No description for rule 4.12
> > Rule 4.13
> > No description for rule 4.13
> > Rule 4.15
> > No description for rule 4.15
> > Rule 4.16
> > No description for rule 4.16
> > Rule 4.17
> > No description for rule 4.17
> > Rule 4.18
> > No description for rule 4.18
> > Rule 4.19
> > No description for rule 4.19
> > Rule 4.20
> > No description for rule 4.20
> > Rule 4.21
> > No description for rule 4.21
> > Rule 5.5
> > No description for rule 5.5
> > Rule 5.6
> > No description for rule 5.6
> > Rule 5.7
> > No description for rule 5.7
> > Rule 5.8
> > No description for rule 5.8
> > Rule 5.9
> > No description for rule 5.9
> > Rule 5.10
> > No description for rule 5.10
> > Rule 5.11
> > No description for rule 5.11
> > Rule 5.12
> > No description for rule 5.12
> > Rule 5.13
> > No description for rule 5.13
> > Rule 5.14
> > No description for rule 5.14
> > Rule 5.15
> > No description for rule 5.15
> > Rule 5.16
> > No description for rule 5.16
> > Rule 5.17
> > No description for rule 5.17
> > Rule 5.18
> > No description for rule 5.18
> > Rule 5.19
> > No description for rule 5.19
> > Rule 5.20
> > No description for rule 5.20
> > Rule 5.21
> > No description for rule 5.21
> > Rule 6.1
> > No description for rule 6.1
> > Rule 6.3
> > No description for rule 6.3
> > Rule 6.4
> > No description for rule 6.4
> > Rule 6.5
> > No description for rule 6.5
> > Rule 6.6
> > No description for rule 6.6
> > Rule 6.7
> > No description for rule 6.7
> > Rule 6.8
> > No description for rule 6.8
> > Rule 6.9
> > No description for rule 6.9
> > Rule 6.10
> > No description for rule 6.10
> > Rule 6.11
> > No description for rule 6.11
> > Rule 6.12
> > No description for rule 6.12
> > Rule 6.13
> > No description for rule 6.13
> > Rule 6.14
> > No description for rule 6.14
> > Rule 6.15
> > No description for rule 6.15
> > Rule 6.16
> > No description for rule 6.16
> > Rule 6.17
> > No description for rule 6.17
> > Rule 6.18
> > No description for rule 6.18
> > Rule 6.19
> > No description for rule 6.19
> > Rule 6.20
> > No description for rule 6.20
> > Rule 6.21
> > No description for rule 6.21
> > Rule 7.1
> > No description for rule 7.1
> > Rule 7.2
> > No description for rule 7.2
> > Rule 7.3
> > No description for rule 7.3
> > Rule 7.4
> > No description for rule 7.4
> > Rule 7.5
> > No description for rule 7.5
> > Rule 7.6
> > No description for rule 7.6
> > Rule 7.7
> > No description for rule 7.7
> > Rule 7.8
> > No description for rule 7.8
> > Rule 7.9
> > No description for rule 7.9
> > Rule 7.10
> > No description for rule 7.10
> > Rule 7.11
> > No description for rule 7.11
> > Rule 7.12
> > No description for rule 7.12
> > Rule 7.13
> > No description for rule 7.13
> > Rule 7.14
> > No description for rule 7.14
> > Rule 7.15
> > No description for rule 7.15
> > Rule 7.16
> > No description for rule 7.16
> > Rule 7.17
> > No description for rule 7.17
> > Rule 7.18
> > No description for rule 7.18
> > Rule 7.19
> > No description for rule 7.19
> > Rule 7.20
> > No description for rule 7.20
> > Rule 7.21
> > No description for rule 7.21
> > Rule 8.2
> > No description for rule 8.2
> > Rule 8.3
> > No description for rule 8.3
> > Rule 8.7
> > No description for rule 8.7
> > Rule 8.9
> > No description for rule 8.9
> > Rule 8.11
> > No description for rule 8.11
> > Rule 8.13
> > No description for rule 8.13
> > Rule 8.14
> > No description for rule 8.14
> > Rule 8.15
> > No description for rule 8.15
> > Rule 8.16
> > No description for rule 8.16
> > Rule 8.17
> > No description for rule 8.17
> > Rule 8.18
> > No description for rule 8.18
> > Rule 8.19
> > No description for rule 8.19
> > Rule 8.20
> > No description for rule 8.20
> > Rule 8.21
> > No description for rule 8.21
> > Rule 9.3
> > No description for rule 9.3
> > Rule 9.4
> > No description for rule 9.4
> > Rule 9.5
> > No description for rule 9.5
> > Rule 9.6
> > No description for rule 9.6
> > Rule 9.7
> > No description for rule 9.7
> > Rule 9.8
> > No description for rule 9.8
> > Rule 9.9
> > No description for rule 9.9
> > Rule 9.10
> > No description for rule 9.10
> > Rule 9.11
> > No description for rule 9.11
> > Rule 9.12
> > No description for rule 9.12
> > Rule 9.13
> > No description for rule 9.13
> > Rule 9.14
> > No description for rule 9.14
> > Rule 9.15
> > No description for rule 9.15
> > Rule 9.16
> > No description for rule 9.16
> > Rule 9.17
> > No description for rule 9.17
> > Rule 9.18
> > No description for rule 9.18
> > Rule 9.19
> > No description for rule 9.19
> > Rule 9.20
> > No description for rule 9.20
> > Rule 9.21
> > No description for rule 9.21
> > Rule 10.1
> > No description for rule 10.1
> > Rule 10.2
> > No description for rule 10.2
> > Rule 10.3
> > No description for rule 10.3
> > Rule 10.4
> > No description for rule 10.4
> > Rule 10.5
> > No description for rule 10.5
> > Rule 10.6
> > No description for rule 10.6
> > Rule 10.7
> > No description for rule 10.7
> > Rule 10.8
> > No description for rule 10.8
> > Rule 10.9
> > No description for rule 10.9
> > Rule 10.10
> > No description for rule 10.10
> > Rule 10.11
> > No description for rule 10.11
> > Rule 10.12
> > No description for rule 10.12
> > Rule 10.13
> > No description for rule 10.13
> > Rule 10.14
> > No description for rule 10.14
> > Rule 10.15
> > No description for rule 10.15
> > Rule 10.16
> > No description for rule 10.16
> > Rule 10.17
> > No description for rule 10.17
> > Rule 10.18
> > No description for rule 10.18
> > Rule 10.19
> > No description for rule 10.19
> > Rule 10.20
> > No description for rule 10.20
> > Rule 10.21
> > No description for rule 10.21
> > Rule 11.1
> > No description for rule 11.1
> > Rule 11.2
> > No description for rule 11.2
> > Rule 11.3
> > No description for rule 11.3
> > Rule 11.4
> > No description for rule 11.4
> > Rule 11.5
> > No description for rule 11.5
> > Rule 11.6
> > No description for rule 11.6
> > Rule 11.7
> > No description for rule 11.7
> > Rule 11.8
> > No description for rule 11.8
> > Rule 11.9
> > No description for rule 11.9
> > Rule 11.10
> > No description for rule 11.10
> > Rule 11.11
> > No description for rule 11.11
> > Rule 11.12
> > No description for rule 11.12
> > Rule 11.13
> > No description for rule 11.13
> > Rule 11.14
> > No description for rule 11.14
> > Rule 11.15
> > No description for rule 11.15
> > Rule 11.16
> > No description for rule 11.16
> > Rule 11.17
> > No description for rule 11.17
> > Rule 11.18
> > No description for rule 11.18
> > Rule 11.19
> > No description for rule 11.19
> > Rule 11.20
> > No description for rule 11.20
> > Rule 11.21
> > No description for rule 11.21
> > Rule 12.1
> > No description for rule 12.1
> > Rule 12.2
> > No description for rule 12.2
> > Rule 12.3
> > No description for rule 12.3
> > Rule 12.4
> > No description for rule 12.4
> > Rule 12.5
> > No description for rule 12.5
> > Rule 12.6
> > No description for rule 12.6
> > Rule 12.7
> > No description for rule 12.7
> > Rule 12.8
> > No description for rule 12.8
> > Rule 12.9
> > No description for rule 12.9
> > Rule 12.10
> > No description for rule 12.10
> > Rule 12.11
> > No description for rule 12.11
> > Rule 12.12
> > No description for rule 12.12
> > Rule 12.13
> > No description for rule 12.13
> > Rule 12.14
> > No description for rule 12.14
> > Rule 12.15
> > No description for rule 12.15
> > Rule 12.16
> > No description for rule 12.16
> > Rule 12.17
> > No description for rule 12.17
> > Rule 12.18
> > No description for rule 12.18
> > Rule 12.19
> > No description for rule 12.19
> > Rule 12.20
> > No description for rule 12.20
> > Rule 12.21
> > No description for rule 12.21
> > Rule 13.1
> > No description for rule 13.1
> > Rule 13.2
> > No description for rule 13.2
> > Rule 13.3
> > No description for rule 13.3
> > Rule 13.4
> > No description for rule 13.4
> > Rule 13.5
> > No description for rule 13.5
> > Rule 13.7
> > No description for rule 13.7
> > Rule 13.8
> > No description for rule 13.8
> > Rule 13.9
> > No description for rule 13.9
> > Rule 13.10
> > No description for rule 13.10
> > Rule 13.11
> > No description for rule 13.11
> > Rule 13.12
> > No description for rule 13.12
> > Rule 13.13
> > No description for rule 13.13
> > Rule 13.14
> > No description for rule 13.14
> > Rule 13.15
> > No description for rule 13.15
> > Rule 13.16
> > No description for rule 13.16
> > Rule 13.17
> > No description for rule 13.17
> > Rule 13.18
> > No description for rule 13.18
> > Rule 13.19
> > No description for rule 13.19
> > Rule 13.20
> > No description for rule 13.20
> > Rule 13.21
> > No description for rule 13.21
> > Rule 14.2
> > No description for rule 14.2
> > Rule 14.3
> > No description for rule 14.3
> > Rule 14.4
> > No description for rule 14.4
> > Rule 14.5
> > No description for rule 14.5
> > Rule 14.6
> > No description for rule 14.6
> > Rule 14.7
> > No description for rule 14.7
> > Rule 14.8
> > No description for rule 14.8
> > Rule 14.9
> > No description for rule 14.9
> > Rule 14.10
> > No description for rule 14.10
> > Rule 14.11
> > No description for rule 14.11
> > Rule 14.12
> > No description for rule 14.12
> > Rule 14.13
> > No description for rule 14.13
> > Rule 14.14
> > No description for rule 14.14
> > Rule 14.15
> > No description for rule 14.15
> > Rule 14.16
> > No description for rule 14.16
> > Rule 14.17
> > No description for rule 14.17
> > Rule 14.18
> > No description for rule 14.18
> > Rule 14.19
> > No description for rule 14.19
> > Rule 14.20
> > No description for rule 14.20
> > Rule 14.21
> > No description for rule 14.21
> > Rule 15.1
> > No description for rule 15.1
> > Rule 15.2
> > No description for rule 15.2
> > Rule 15.3
> > No description for rule 15.3
> > Rule 15.4
> > No description for rule 15.4
> > Rule 15.5
> > No description for rule 15.5
> > Rule 15.6
> > No description for rule 15.6
> > Rule 15.7
> > No description for rule 15.7
> > Rule 15.8
> > No description for rule 15.8
> > Rule 15.9
> > No description for rule 15.9
> > Rule 15.10
> > No description for rule 15.10
> > Rule 15.11
> > No description for rule 15.11
> > Rule 15.12
> > No description for rule 15.12
> > Rule 15.13
> > No description for rule 15.13
> > Rule 15.14
> > No description for rule 15.14
> > Rule 15.15
> > No description for rule 15.15
> > Rule 15.16
> > No description for rule 15.16
> > Rule 15.17
> > No description for rule 15.17
> > Rule 15.18
> > No description for rule 15.18
> > Rule 15.19
> > No description for rule 15.19
> > Rule 15.20
> > No description for rule 15.20
> > Rule 15.21
> > No description for rule 15.21
> > Rule 16.1
> > No description for rule 16.1
> > Rule 16.2
> > No description for rule 16.2
> > Rule 16.3
> > No description for rule 16.3
> > Rule 16.4
> > No description for rule 16.4
> > Rule 16.5
> > No description for rule 16.5
> > Rule 16.6
> > No description for rule 16.6
> > Rule 16.8
> > No description for rule 16.8
> > Rule 16.9
> > No description for rule 16.9
> > Rule 16.10
> > No description for rule 16.10
> > Rule 16.11
> > No description for rule 16.11
> > Rule 16.12
> > No description for rule 16.12
> > Rule 16.13
> > No description for rule 16.13
> > Rule 16.14
> > No description for rule 16.14
> > Rule 16.15
> > No description for rule 16.15
> > Rule 16.16
> > No description for rule 16.16
> > Rule 16.17
> > No description for rule 16.17
> > Rule 16.18
> > No description for rule 16.18
> > Rule 16.19
> > No description for rule 16.19
> > Rule 16.20
> > No description for rule 16.20
> > Rule 16.21
> > No description for rule 16.21
> > Rule 17.1
> > No description for rule 17.1
> > Rule 17.2
> > No description for rule 17.2
> > Rule 17.5
> > No description for rule 17.5
> > Rule 17.6
> > No description for rule 17.6
> > Rule 17.7
> > No description for rule 17.7
> > Rule 17.8
> > No description for rule 17.8
> > Rule 17.9
> > No description for rule 17.9
> > Rule 17.10
> > No description for rule 17.10
> > Rule 17.11
> > No description for rule 17.11
> > Rule 17.12
> > No description for rule 17.12
> > Rule 17.13
> > No description for rule 17.13
> > Rule 17.14
> > No description for rule 17.14
> > Rule 17.15
> > No description for rule 17.15
> > Rule 17.16
> > No description for rule 17.16
> > Rule 17.17
> > No description for rule 17.17
> > Rule 17.18
> > No description for rule 17.18
> > Rule 17.19
> > No description for rule 17.19
> > Rule 17.20
> > No description for rule 17.20
> > Rule 17.21
> > No description for rule 17.21
> > Rule 18.1
> > No description for rule 18.1
> > Rule 18.2
> > No description for rule 18.2
> > Rule 18.3
> > No description for rule 18.3
> > Rule 18.4
> > No description for rule 18.4
> > Rule 18.5
> > No description for rule 18.5
> > Rule 18.6
> > No description for rule 18.6
> > Rule 18.7
> > No description for rule 18.7
> > Rule 18.8
> > No description for rule 18.8
> > Rule 18.9
> > No description for rule 18.9
> > Rule 18.10
> > No description for rule 18.10
> > Rule 18.11
> > No description for rule 18.11
> > Rule 18.12
> > No description for rule 18.12
> > Rule 18.13
> > No description for rule 18.13
> > Rule 18.14
> > No description for rule 18.14
> > Rule 18.15
> > No description for rule 18.15
> > Rule 18.16
> > No description for rule 18.16
> > Rule 18.17
> > No description for rule 18.17
> > Rule 18.18
> > No description for rule 18.18
> > Rule 18.19
> > No description for rule 18.19
> > Rule 18.20
> > No description for rule 18.20
> > Rule 18.21
> > No description for rule 18.21
> > Rule 19.1
> > No description for rule 19.1
> > Rule 19.2
> > No description for rule 19.2
> > Rule 19.3
> > No description for rule 19.3
> > Rule 19.4
> > No description for rule 19.4
> > Rule 19.5
> > No description for rule 19.5
> > Rule 19.6
> > No description for rule 19.6
> > Rule 19.7
> > No description for rule 19.7
> > Rule 19.8
> > No description for rule 19.8
> > Rule 19.9
> > No description for rule 19.9
> > Rule 19.10
> > No description for rule 19.10
> > Rule 19.11
> > No description for rule 19.11
> > Rule 19.12
> > No description for rule 19.12
> > Rule 19.13
> > No description for rule 19.13
> > Rule 19.14
> > No description for rule 19.14
> > Rule 19.15
> > No description for rule 19.15
> > Rule 19.16
> > No description for rule 19.16
> > Rule 19.17
> > No description for rule 19.17
> > Rule 19.18
> > No description for rule 19.18
> > Rule 19.19
> > No description for rule 19.19
> > Rule 19.20
> > No description for rule 19.20
> > Rule 19.21
> > No description for rule 19.21
> > Rule 20.1
> > No description for rule 20.1
> > Rule 20.2
> > No description for rule 20.2
> > Rule 20.3
> > No description for rule 20.3
> > Rule 20.4
> > No description for rule 20.4
> > Rule 20.5
> > No description for rule 20.5
> > Rule 20.6
> > No description for rule 20.6
> > Rule 20.8
> > No description for rule 20.8
> > Rule 20.9
> > No description for rule 20.9
> > Rule 20.10
> > No description for rule 20.10
> > Rule 20.11
> > No description for rule 20.11
> > Rule 20.12
> > No description for rule 20.12
> > Rule 20.15
> > No description for rule 20.15
> > Rule 20.16
> > No description for rule 20.16
> > Rule 20.17
> > No description for rule 20.17
> > Rule 20.18
> > No description for rule 20.18
> > Rule 20.19
> > No description for rule 20.19
> > Rule 20.20
> > No description for rule 20.20
> > Rule 20.21
> > No description for rule 20.21
> > Rule 21.1
> > No description for rule 21.1
> > Rule 21.2
> > No description for rule 21.2
> > Rule 21.3
> > No description for rule 21.3
> > Rule 21.4
> > No description for rule 21.4
> > Rule 21.5
> > No description for rule 21.5
> > Rule 21.6
> > No description for rule 21.6
> > Rule 21.7
> > No description for rule 21.7
> > Rule 21.8
> > No description for rule 21.8
> > Rule 21.9
> > No description for rule 21.9
> > Rule 21.10
> > No description for rule 21.10
> > Rule 21.11
> > No description for rule 21.11
> > Rule 21.12
> > No description for rule 21.12
> > Rule 21.13
> > No description for rule 21.13
> > Rule 21.14
> > No description for rule 21.14
> > Rule 21.15
> > No description for rule 21.15
> > Rule 21.16
> > No description for rule 21.16
> > Rule 21.17
> > No description for rule 21.17
> > Rule 21.18
> > No description for rule 21.18
> > Rule 21.19
> > No description for rule 21.19
> > Rule 21.20
> > No description for rule 21.20
> > Rule 21.21
> > No description for rule 21.21
> > Appendix B
>