PARSE.BITB : Branch Into try Block

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CodeSonar^® 9.2p0

CONFIDENTIAL

CodeSecure Inc

C and C++

PARSE.BITB : Branch Into try Block

Summary

Control is transferred into a try block using a goto or switch statement.

Code that triggers a warning of this class will trigger further warnings, if the relevant classes are enabled.

Code that contains a goto statement will also trigger a Goto Statement warning, and in some cases a Backwards goto warning.
A switch with an interleaved try block will typically also have one or more of the issues reported by LANG.STRUCT.SW.* classes.

Properties

Class Name

Branch Into try Block

Significance

style

Mnemonic

PARSE.BITB

Categories

AUTOSARC++14	AUTOSARC++14:M15-0-3	Control shall not be transferred into a try or catch block using a goto or a switch statement.
MisraC++2008	MisraC++2008:15-0-3	Control shall not be transferred into a try or catch block using a goto or a switch statement.
CWE	CWE:691	Insufficient Control Flow Management
	CWE:703	Improper Check or Handling of Exceptional Conditions
CERT-C	CERT-C:MSC20-C	Do not use a switch statement to transfer control into a complex block
JSF++	JSF++:208	C++ exceptions shall not be used (i.e. throw, catch and try shall not be used.)
OWASP-2025	OWASP-2025:A10	Mishandling of Exceptional Conditions

Availability

Available for C++ only (not C).

Enabling

Checks for this warning class are enabled by default. However, warning instances of this class that are issued as parser errors (rather than parser warnings) will be discarded when using factory configuration settings. To prevent these instances from being discarded, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Branch Into try Block"

To disable checks for this warning class, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += discard class="Branch Into try Block"

Example

void clean_up(void);
void do_action(void);

void parse_bitb (int i) {
    if (i>0) {
      goto Label_in_try;              // 'Branch Into try Block', 
                                      // ('Goto Statement', and 'Label Not In Enclosing Block' warnings also issued)
    }
    if (i<0) {
      goto Label_in_catch;                          // ('Branch Into Handler', 'Goto Statement', and
                                                    //  'Label Not In Enclosing Block' warnings issued here)
    }
    try {
    Label_in_try:
        do_action();
    }
    catch (...){                                    // ('Use of catch' warning issued here)
    Label_in_catch:
        clean_up();
    }
}

Relevant Configuration File Parameters

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

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