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C

C static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C code

  • All rules 315
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  • Bug76
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  • Code Smell207

  • Quick Fix 19
Filtered: 9 rules found
obsolete
    Impact
      Clean code attribute
        1. Digraphs should not be used

           Code Smell
        2. Trigraphs should not be used

           Code Smell
        3. GNU extensions should not be used

           Code Smell
        4. Increment should not be used to set boolean variables to 'true'

           Code Smell
        5. Obsolete POSIX functions should not be used

           Code Smell
        6. Code annotated as deprecated should not be used

           Code Smell
        7. Deprecated K&R syntax should not be used for function definition

           Code Smell
        8. Deprecated code should be removed

           Code Smell
        9. Deprecated attributes should include explanations

           Code Smell

        Digraphs should not be used

        intentionality - clear
        maintainability
        Code Smell
        Quick FixIDE quick fixes available with SonarLint
        • based-on-misra
        • obsolete

        Why is this an issue?

        More Info

        The use of digraphs may not meet developer expectations.

        The digraphs are:

        • <%
        • %>
        • <:
        • :>
        • %:
        • %:%:

        Noncompliant code example

        template <typename T>
        class A
        {
          public:
            template<int32_t i>
            void f2();
        };
        
        void f(A<int32_t> * a<:10:>)    /* Noncompliant - usage of '<:' instead of '[' and ':>' instead of ']' */
        <%                              /* Noncompliant - usage of '<%' instead of '{' */
          a<:0:>->f2<20>();             /* Noncompliant - usage of '<:' and ':>' */
        %>                              /* Noncompliant - usage of '%>' instead of '}' */
        

        Compliant solution

        /* ... */
        
        void f(A<int32_t> * a[10])      /* Compliant */
        {                               /* Compliant */
          a[0]->f2<20>();               /* Compliant */
        }                               /* Compliant */
        
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          Available Since
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