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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
Ada


ADA.MEM.NPD : Null Pointer Dereference (Ada)

This warning class corresponds to a GNAT SAS message. The CodeSonar analysis results may include warnings of this class if your CodeSonar project includes Ada components.

Summary

A null pointer is dereferenced.

This warning class corresponds to the GNAT SAS Access_check.

Properties

Class Name Null Pointer Dereference (Ada)
Significance reliability
Mnemonic ADA.MEM.NPD
Categories
CWE CWE:476 NULL Pointer Dereference
  CWE:573 Improper Following of Specification by Caller
  CWE:690 Unchecked Return Value to NULL Pointer Dereference
OWASP-2025 OWASP-2025:A10 Mishandling of Exceptional Conditions
Availability Available for Ada only.
Enabling Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file.
WARNING_FILTER += discard class="Null Pointer Dereference (Ada)"

Example

procedure P is
  type Int_Ptr is access Integer;

  Some_Cond : Boolean with Volatile;

  function Get_Ptr return Int_Ptr is
  begin
    if Some_Cond then
      return new Integer;
    else
      return null;
    end if;
  end Get_Ptr;

  X : Int_Ptr := Get_Ptr;            -- P.GetPtr could return null
begin
  X.all := 42;            -- warning issued here
end P;

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

 

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