https://llvm.org/bugs/show_bug.cgi?id=31497
Bug ID: 31497
Summary: ctype_byname<Char>::do_widen widens invalid characters
to WEOF.
Product: libc++
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: e...@efcs.ca
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
Classification: Unclassified
Currently ctype_byname<wchar_t>::do_widen(char) widens invalid characters to
WEOF. This is probably the incorrect behavior, even if libstdc++ also does it.
Instead do_widen should return the original value when btowc returns WEOF.
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