http://d.puremagic.com/issues/show_bug.cgi?id=8800

           Summary: Invalid UTF-8 sequences allowed in strings with 'c'
                    postfix.
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody@puremagic.com
        ReportedBy: aziz.koeksal@gmail.com


--- Comment #0 from Aziz Köksal <aziz.koeksal@gmail.com> 2012-10-11 05:56:24 PDT ---
Consider this code:

auto s1 = "\x80";  // No error.
auto s2 = "\x80"c; // No error.
auto s3 = "\x80"w; // Error: invalid UTF-8 sequence
auto s4 = "\x80"d; // Error: invalid UTF-8 sequence

When the user explicitly appends the c-postfix, I think for consistency's sake, the string should be validated and invalid UTF-8 sequences should be rejected.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |bugzilla@digitalmars.com
         Resolution|                            |WONTFIX


--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> 2012-10-11 06:08:41 PDT ---
I think this could become very annoying, as strings are often invalid UTF-8 sequences while they are being constructed.

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Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement


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--- Comment #2 from Aziz Köksal <aziz.koeksal@gmail.com> 2012-10-11 06:28:34 PDT ---
I'm not sure how it would, because I'm only talking about string literals.

So code like this would still work, of course:

auto s = "valid utf-8"c;
s ~= "invalid utf-8: \x80";

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