malcolm.parsons added inline comments.
================
Comment at: lib/Lex/LiteralSupport.cpp:768
.Cases("il", "i", "if", true)
+ .Case("sv", true)
.Default(false);
----------------
aaron.ballman wrote:
> mclow.lists wrote:
> > malcolm.parsons wrote:
> > > This is in `NumericLiteralParser::isValidUDSuffix()`.
> > >
> > > If a change is needed for `"sv"`, wouldn't it be in `StringLiteralParser`?
> > Would it be? I don't know. `"s"` appears here, which is used for both
> > 'string' and 'seconds'.
> This function is used by the numeric literal parser, and so `sv` does not
> make sense there. It's also used by SemaDeclCXX.cpp in
> `CheckLiteralOperatorDeclaration()`, where this change would make sense.
>
> I was asking about test cases; I was wondering what problem this was trying
> to solve. I suspect you want to modify `CheckLiteralOperatorDeclaration()`
> rather than `NumericLiteralParser`.
`s` for `std::string` seems to be handled in `Lexer::LexUDSuffix()`:
```
IsUDSuffix = (Chars == 1 && Buffer[0] == 's') ||
NumericLiteralParser::isValidUDSuffix(
getLangOpts(), StringRef(Buffer, Chars));
```
https://reviews.llvm.org/D26667
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