[llvm-bugs] [Bug 42637] New: deprecated attribute string-literal

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42637

            Bug ID: 42637
           Summary: deprecated attribute string-literal
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: aaron at aaronballman.com
                CC: blitzrakete at gmail.com, dgregor at apple.com,
                    erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Clang rejects valid C++ code when the deprecated attribute is given a
non-narrow string literal. e.g.,

[[deprecated(u"Test")]] void foo1();
[[deprecated(U"Test")]] void foo2();
[[deprecated(u8"Test")]] void foo3();
[[deprecated(L"Test")]] void foo4();

all are diagnosed as:

error: 'deprecated' attribute requires a string

http://eel.is/c++draft/dcl.attr.deprecated#1 specifies that it should accept an
arbitrary string literal.

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