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This checks if format string using as fill character an Unicode code-point, that is encoded as multiple code units, is rejected when literal encoding is not Unicode. libstdc++-v3/ChangeLog: * testsuite/std/format/fill.cc: New test. * testsuite/std/format/fill_nonunicode.cc: New test. Reviewed-by: Jonathan Wakely <jwakely@redhat.com> Signed-off-by: Tomasz Kamiński <tkaminsk@redhat.com>
57 lines
1.3 KiB
C++
57 lines
1.3 KiB
C++
// { dg-options "-fexec-charset=UTF-8 -DUNICODE_ENC" }
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// { dg-do run { target c++20 } }
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#include <format>
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#include <testsuite_hooks.h>
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template<typename... Args>
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bool
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is_format_string_for(const char* str, Args&&... args)
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{
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try {
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(void) std::vformat(str, std::make_format_args(args...));
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return true;
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} catch (const std::format_error&) {
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return false;
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}
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}
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template<typename T>
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void
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test_fill(T t)
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{
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constexpr bool accept_utf8_nonascii
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#ifdef UNICODE_ENC
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= true;
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#else
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= false;
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#endif
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VERIFY(is_format_string_for("{: <}", t));
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VERIFY(is_format_string_for("{:Å<}", t));
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// U+0119 Latin Small Letter E with Ogonek
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VERIFY(is_format_string_for("{:\xC4\x99<}", t) == accept_utf8_nonascii);
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// U+2705 White Heavy Check Mark
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VERIFY(is_format_string_for("{:\xE2\x9C\x85<}", t) == accept_utf8_nonascii);
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// U+1F602 Face with Tears of Joy
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VERIFY(is_format_string_for("{:\xF0\x9F\x98\x82<}", t) == accept_utf8_nonascii);
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}
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struct MyStringView : std::string_view
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{
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using std::string_view::string_view;
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};
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template<>
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struct std::formatter<MyStringView, char>
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: std::formatter<std::string_view, char>
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{};
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int main()
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{
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test_fill(10);
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test_fill(std::string_view("test"));
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// Test with type stored by handle
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test_fill(MyStringView("test"));
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}
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