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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++

LANG.STRUCT.BNC : Body Is Not Compound Statement

Summary

The body of a while, do-while, for, if, else, or switch statement is not enclosed in braces {...}.

Properties

Class Name Body Is Not Compound Statement
Significance style
Mnemonic LANG.STRUCT.BNC
Categories
MisraC2025 MisraC2025:15.6 The body of an iteration-statement or a selection-statement shall be a compound-statement
MisraC2023 MisraC2023:15.6 The body of an iteration-statement or a selection-statement shall be a compound-statement
Misra2012 Misra2012:15.6 The body of an iteration-statement or a selection-statement shall be a compound-statement
Misra2004 Misra2004:14.3 Before preprocessing, a null statement shall only occur on a line by itself; it may be followed by a comment provided that the first character following the null statement is a white-space character
  Misra2004:14.8 The statement forming the body of a switch, while, do ... while or for statement shall be a compound statement
  Misra2004:14.9 An if (expression) construct shall be followed by a compound statement. The else keyword shall be followed by either a compound statement, or another if statement
AUTOSARC++14 AUTOSARC++14:M6-3-1 The statement forming the body of a switch, while, do ... while or for statement shall be a compound statement.
  AUTOSARC++14:M6-4-1 An if ( condition ) construct shall be followed by a compound statement. The else keyword shall be followed by either a compound statement, or another if statement.
MisraC++2008 MisraC++2008:6-3-1 The statement forming the body of a switch, while, do ... while or for statement shall be a compound statement.
  MisraC++2008:6-4-1 An if ( condition ) construct shall be followed by a compound statement. The else keyword shall be followed by either a compound statement, or another if statement.
MisraC++2023 MisraC++2023:9.3.1 The body of an iteration-statement or a selection-statement shall be a compound-statement
JSF++ JSF++:59 The statements forming the body of an if, else if, else, while, do...while or for statement shall always be enclosed in braces, even if the braces form an empty block.
Availability Available for C and C++.
Enabling Checks for this warning class are disabled by default, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file. 
RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Body Is Not Compound Statement"
Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

Functions f() and g() have the same contents (the only difference is in indentation), and both will trigger Body Is Not Compound Statement warnings. Note that indentation may cause some readers to mistakenly believe that the call to b(i) in g() is part of the if statement: explicitly enclosing the body in braces would make the behavior clearer.

void a(int p);
void b(int p);
void c(int p);

void f(int i){ 
    if (i > 5) /* 'Body Is Not Compound Statement' warning issued here */
        a(i);
    b(i);
    c(i);
}  

void g(int i){ 
    if (i > 5) /* 'Body Is Not Compound Statement' warning issued here */
        a(i);
        b(i);
    c(i);
}

Relevant Configuration File Parameters

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

 

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