BADFUNC.FENV_H : Use of <fenv.h> Exception Handling Function

Summary

A use of one of the exception-handling functions defined in <fenv.h>: feclearexcept(), fegetexceptflag(), feraiseexcept(), fesetexceptflag(), fetestexcept(), fegetround(), fesetround(), fegetenv(), feholdexcept(), fesetenv(), feupdateenv(). Using these functions can lead to undefined behavior.

Properties

WARNING_FILTER += allow class="Use of <fenv.h> Exception Handling Function"

Example

#include <fenv.h>

int do_fp_getenv(fenv_t *fenv)
{
  return fegetenv(fenv); /* 'Use of <fenv.h> Exception Handling Function'
                          * warning issued here */} 
 }

Relevant Configuration File Parameters

This class is implemented using a BAD_FUNCTION_* rule set in the general template configuration file.

• To include an additional function or set of functions in the checks for this class, create a new set of BAD_FUNCTION_* rules in which the BAD_FUNCTION_REGEX setting matches the function or set of functions you want to check and the remaining rules match those in the other sets for this class.
• To remove a function or set of functions from the checks for this class, edit the configuration file to comment out the corresponding set of BAD_FUNCTION_* rules.

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

• BAD_FUNCTION_BASE_RANK
• BAD_FUNCTION_CATEGORIES
• BAD_FUNCTION_INFO
• BAD_FUNCTION_LINK
• BAD_FUNCTION_MESSAGE
• BAD_FUNCTION_RANK
• BAD_FUNCTION_REGEX
• BAD_FUNCTION_SIGNIFICANCE
• REPORT_SIMILAR_WARNINGS
• WARNING_FILTER