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Bjarne Stroustrup 2017-04-20 20:46:17 -04:00
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CppCoreGuidelines.md
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@ -4067,7 +4067,7 @@ For example, a derived class might be allowed to skip a run-time check because i
// ... data ... // ... data ...
}; };
class Der : public Foo { class Dir : public Foo {
//... //...
int mem(int x, int y) { /* ... do something ... */ rteurn do_bar(x+y); } // OK: derived class can bypass check int mem(int x, int y) { /* ... do something ... */ rteurn do_bar(x+y); } // OK: derived class can bypass check
} }
@ -6959,13 +6959,13 @@ or various bases from boost.intrusive (e.g. `list_base_hook` or `intrusive_ref_c
int y; int y;
}; };
class Derive1 : public Interface, protected Utility { class Derive1 : public Interface, virtual protected Utility {
// overrride Iterface functions // overrride Iterface functions
// Maybe overrid Utility virtual functions // Maybe overrid Utility virtual functions
// ... // ...
}; };
class Derive2 : public Interface, protected Utility { class Derive2 : public Interface, virtual protected Utility {
// overrride Iterface functions // overrride Iterface functions
// Maybe overrid Utility virtual functions // Maybe overrid Utility virtual functions
// ... // ...
@ -17374,7 +17374,7 @@ String summary:
* [SL.str.4: Use `char*` to refer to a single character](#Rstr-char*) * [SL.str.4: Use `char*` to refer to a single character](#Rstr-char*)
* [Sl.str.5: Use `std::byte` to refer to byte values that do not necessarily represent characters](#Rstr-byte) * [Sl.str.5: Use `std::byte` to refer to byte values that do not necessarily represent characters](#Rstr-byte)
* [Sl.str.10: Use `std::string` when you need to perform locale-sensitive sting operations](#Rstr-locale) * [Sl.str.10: Use `std::string` when you need to perform locale-sensitive string operations](#Rstr-locale)
* [Sl.str.11: Use `gsl::string_span` rather than `std::string_view` when you need to mutate a string](#Rstr-span) * [Sl.str.11: Use `gsl::string_span` rather than `std::string_view` when you need to mutate a string](#Rstr-span)
* [Sl.str.12: Use the `s` suffix for string literals meant to be standard-library `string`s](#Rstr-s) * [Sl.str.12: Use the `s` suffix for string literals meant to be standard-library `string`s](#Rstr-s)
@ -17570,7 +17570,7 @@ C++17
??? ???
### <a name="Rstr-locale"></a>Sl.str.10: Use `std::string` when you need to perform locale-sensitive sting operations ### <a name="Rstr-locale"></a>Sl.str.10: Use `std::string` when you need to perform locale-sensitive string operations
##### Reason ##### Reason
@ -18204,10 +18204,12 @@ Candidates include:
* narrowing arithmetic promotions/conversions (likely part of a separate safe-arithmetic profile) * narrowing arithmetic promotions/conversions (likely part of a separate safe-arithmetic profile)
* arithmetic cast from negative floating point to unsigned integral type (ditto) * arithmetic cast from negative floating point to unsigned integral type (ditto)
* selected undefined behavior: Start with Gaby Dos Reis's UB list developed for the WG21 study group * selected undefined behavior: Start with Gabriel Dos Reis's UB list developed for the WG21 study group
* selected unspecified behavior: Addressing portability concerns. * selected unspecified behavior: Addressing portability concerns.
* `const` violations: Mostly done by compilers already, but we can catch inappropriate casting and underuse of `const`. * `const` violations: Mostly done by compilers already, but we can catch inappropriate casting and underuse of `const`.
Enabling a profile is implementation defined; typically, it is set in the analysis tool used.
To suppress enforcement of a profile check, place a `suppress` annotation on a language contract. For example: To suppress enforcement of a profile check, place a `suppress` annotation on a language contract. For example:
[[suppress(bounds)]] char* raw_find(char* p, int n, char x) // find x in p[0]..p[n-1] [[suppress(bounds)]] char* raw_find(char* p, int n, char x) // find x in p[0]..p[n-1]