6. Adding the Results of Compiler Checks to gnatcheck Output

The gnatcheck tool can include in the generated diagnostic messages and in the report file the results of the checks performed by the compiler. Though disabled by default, this effect may be obtained by using +R with the following rule identifiers and parameters:

Restrictions

To record restrictions violations (which are performed by the compiler if the pragma Restrictions or Restriction_Warnings are given), use the Restrictions rule with the same parameters as pragma Restrictions or Restriction_Warnings.

This rule allows parametric rule exemptions, the parameters that are allowed in the definition of exemption sections are the names of the restrictions except for the case when a restriction requires a non-numeric parameter, in this case the parameter should be the name of the restriction with the parameter, as it is given for the rule.

Style_Checks

To record compiler style checks (see Style Checking section in GNAT User’s Guide), use the Style_Checks rule.

This rule takes a parameter in one of the following forms:

• All_Checks,

  which enables the standard style checks corresponding to the -gnatyy GNAT style check option, or

• a string with the same structure and semantics as the string_LITERAL parameter of the GNAT pragma Style_Checks (see “Pragma Style_Checks” in the GNAT Reference Manual).

For example, the +RStyle_Checks:O rule option activates the compiler style check that corresponds to -gnatyO style check option.

Warnings

To record compiler warnings (see Warning Message Control section in GNAT User’s Guide), use the Warnings rule with a parameter that is a valid static_string_expression argument of the GNAT pragma Warnings (see “Pragma Warnings” in the GNAT Reference Manual). Note that in case of gnatcheck ‘s’ parameter, that corresponds to the GNAT -gnatws option, disables all the specific warnings, but not suppresses the warning mode, and ‘e’ parameter, corresponding to -gnatwe that means “treat warnings as errors”, does not have any effect.

This rule allows parametric rule exemptions, the parameters that are allowed in the definition of exemption sections are the same as the parameters of the rule itself. Note that parametric exemption sections have their effect only if either .d parameter is specified for the Warnings rule or if the --show-rules option is set.

To disable a specific restriction check, use -RRestrictions gnatcheck option with the corresponding restriction name as a parameter. -R is not available for Style_Checks and Warnings options, to disable warnings and style checks, use the corresponding warning and style options.