PARSE.INCOMPATIBLE.EXCSPECS : Incompatible Exception Specifications

JavaScript is not currently enabled, but is required for full CodeSonar manual search and browse functionality.

If you are viewing this file in your hub's Web GUI, enable JavaScript in your browser: you will also need it for GUI functionality.

If you opened this file directly from disk, your browser may be directly suppressing JavaScript functionality: certain browsers perform this suppression on local files (but not files delivered by web servers) for security reasons.

If you access the manual through the hub's Web GUI, the functionality will not be suppressed because the hub is a web server.
Alternatively, your browser may allow you to explicitly disable the security setting that suppresses functionality. See the CodeSonar FAQ for more information.

CodeSonar^® 9.2p0

CONFIDENTIAL

CodeSecure Inc

C and C++

PARSE.INCOMPATIBLE.EXCSPECS : Incompatible Exception Specifications

Summary

Two functions with the same type signature but different exception specifications are treated by the compiler as having the same type.

In general, warnings of this class will only occur for C++ code compiled as C++14 or earlier. C++17 and later do not permit two such functions to be treated as having the same type, so you will usually encounter a compiler error instead.

This warning class is derived from a C/C++ parser warning.

Properties

Class Name	Incompatible Exception Specifications
Significance	style
Mnemonic	PARSE.INCOMPATIBLE.EXCSPECS
Categories	None
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="Incompatible Exception Specifications" To disable checks for this warning class, add the following WARNING_FILTER rule to the project configuration file. WARNING_FILTER += discard class="Incompatible Exception Specifications"

Example

void f1() noexcept;
void f2();
template <typename T> void tplt_fn(T &r, T &q){}

void (*myfptr)(void) noexcept;

void parse_incompatible_excspecs(void) {
  myfptr = f2;       // 'Incompatible Exception Specifications' warning issued here for C++14 and earlier
                     // (generally a parse error for C++17 and later)
  tplt_fn(f1, f2);   // 'Incompatible Exception Specifications' warning issued here for C++14 and earlier
                     // (generally a parse error for C++17 and later)
}

Relevant Configuration File Parameters

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

To report problems with this documentation, please visit https://support.codesecure.com/.