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libstdc++: Fix narrowing conversion in std/time/clock/utc/io.cc

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For a port with signed char and unsigned wchar_t initializing a wchar_t
array with a char is a narrowing conversion. The code is wrong for
assuming that (int)'a' == (int)L'a' anyway, so fix it properly by using
ctype<wchar_t>::widen(char).

libstdc++-v3/ChangeLog:

	* testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
This commit is contained in:
Jonathan Wakely 2023-01-15 12:38:31 +00:00
parent e658e8157d
commit 4dc4584b60
1 changed files with 2 additions and 1 deletions
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3
libstdc++-v3/testsuite/std/time/clock/utc/io.cc
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@ -46,6 +46,7 @@ test_format()
std::ostringstream ss;
std::wostringstream wss;
const auto& ct = std::use_facet<std::ctype<wchar_t>>(wss.getloc());
for (char c : specs)
{
@ -68,7 +69,7 @@ test_format()
"required by the chrono-specs") != s.npos);
}
wchar_t wfmt[] = { L'{', L':', L'%', c, L'}' };
wchar_t wfmt[] = { L'{', L':', L'%', ct.widen(c), L'}' };
try
{
wss << std::vformat(std::wstring_view(wfmt, 5),