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AK: Explicitly calculate length of char* when printing

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This moves out the calculation of the char* out to the formatter.
Additionally, we now print (null) when a null pointer is passed.
This commit is contained in:
sin-ack 2022-07-11 19:59:54 +00:00 • committed by Andreas Kling
parent 52d017c611
commit 6eecc65787
2 changed files with 9 additions and 2 deletions
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5
AK/Format.h
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@ -395,6 +395,8 @@ template<>
struct Formatter<Bytes> : Formatter<ReadonlyBytes> {
};
// FIXME: Printing raw char pointers is inherently dangerous. Remove this and
// its users and prefer StringView over it.
template<>
struct Formatter<char const*> : Formatter<StringView> {
ErrorOr<void> format(FormatBuilder& builder, char const* value)
@ -403,7 +405,8 @@ struct Formatter<char const*> : Formatter<StringView> {
Formatter<FlatPtr> formatter { *this };
return formatter.format(builder, reinterpret_cast<FlatPtr>(value));
}
return Formatter<StringView>::format(builder, value);
return Formatter<StringView>::format(builder, value != nullptr ? StringView { value, __builtin_strlen(value) } : "(null)"sv);
}
};
template<>