https://issues.dlang.org/show_bug.cgi?id=23254

          Issue ID: 23254
           Summary: Deprecation: format specifier "%S" and "%C" are
                    invalid
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ibuclaw@gdcproject.org

The "%S" and "%C" format specifiers are part of POSIX.1-2017 XSI extensions for both printf and scanf.

https://pubs.opengroup.org/onlinepubs/9699919799/functions/printf.html https://pubs.opengroup.org/onlinepubs/9699919799/functions/scanf.html

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