LANG.CAST.VARARG : Varargs Function Cast

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A varargs function pointer is cast to another function pointer that has different parameters or return type.

Class Name

Varargs Function Cast

Significance

security

Mnemonic

LANG.CAST.VARARG

Categories

AUTOSARC++14	AUTOSARC++14:M8-4-4	A function identifier shall either be used to call the function or it shall be preceded by &.
MisraC++2008	MisraC++2008:8-4-4	A function identifier shall either be used to call the function or it shall be preceded by &.
CWE	CWE:704	Incorrect Type Conversion or Cast
JSF++	JSF++:183	Every possible measure should be taken to avoid type casting.

Availability

Available for C and C++.

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="Varargs Function Cast"

typedef void (*va_t)(int, ...);
void E( int i, int j ) {}

int main( void ) {
  va_t va = (va_t)E;  /* 'Varargs Function Cast' warning issued here */

   va(1,2,3);
   return 42;
}

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

LANG.CAST.VARARG : Varargs Function Cast

Summary

Properties

Example

Relevant Configuration File Parameters