Explicitly cast elements of __not_fill to _CharT. Only '{' and ':'
are are used as `__not_fill`, so they are never negative.
PR libstdc++/119840
libstdc++-v3/ChangeLog:
* include/std/format (_M_parse_fill_and_align): Cast elements of
_not_fill to _CharT.
---
Tested on x86_64-linux. However I was not able to reproduce the warning,
with either -fsigned-char or -funsigned-char.
OK for trunk?
libstdc++-v3/include/std/format | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libstdc++-v3/include/std/format b/libstdc++-v3/include/std/format
index 2668382c7ed..704721e6679 100644
--- a/libstdc++-v3/include/std/format
+++ b/libstdc++-v3/include/std/format
@@ -555,8 +555,8 @@ namespace __format
constexpr iterator
_M_parse_fill_and_align(iterator __first, iterator __last, string_view
__not_fill) noexcept
{
- for (char c : __not_fill)
- if (*__first == c)
+ for (char __c : __not_fill)
+ if (*__first == static_cast<_CharT>(__c))
return __first;
using namespace __unicode;
--
2.49.0
