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std::quoted doesn't work with char16_t or char32_t strings. #26877

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llvmbot opened this issue Feb 6, 2016 · 4 comments
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std::quoted doesn't work with char16_t or char32_t strings. #26877

llvmbot opened this issue Feb 6, 2016 · 4 comments
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bugzilla libc++ wontfix

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@llvmbot
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@llvmbot llvmbot commented Feb 6, 2016

Bugzilla Link 26503
Resolution WONTFIX
Resolved on Jun 03, 2019 18:41
Version unspecified
OS Linux
Reporter LLVM Bugzilla Contributor
CC @mclow

Extended Description

It instantiates some ctype templates which have not yet been defined for these character types.

@mclow
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@mclow mclow commented Feb 8, 2016

instantiates some ctype templates which have not yet been defined

Right. And the standard only requires ctype specializations for char and wchar_t
(see table 80)

@mclow
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@mclow mclow commented Feb 9, 2016

Actually, it looks like much of the streaming infrastructure depends on having a valid ctype available; so this fails, too:

#include
#include
#include
#include

template <class CharT, class Traits = std::char_traits>
std::basic_string<CharT, Traits> stringViaStream ( const CharT *p ) {
std::basic_stringstream<CharT, Traits> ss;
std::basic_string<CharT, Traits> s;

ss << p;
ss >> s;
assert ( s == p );
return s;
}

int main () {
stringViaStream ( "123");
stringViaStream (L"123");
// stringViaStream (U"123");
// stringViaStream (u"123");
}

@mclow
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@mclow mclow commented Feb 9, 2016

Or rather, it will fail if you uncomment either of the last two lines.

@mclow
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@mclow mclow commented Jun 4, 2019

That's now Table 90 (http://wg21.link/locale.category).
Closing as "won't fix".

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 10, 2021
@Quuxplusone Quuxplusone added the wontfix label Jan 20, 2022
This issue was closed.
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Labels
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