cor3ntin added a comment.
This generally looks good to me but i have a couple remarks
================
Comment at: clang/lib/Frontend/TextDiagnostic.cpp:124-128
+ if (CharSize == 1 && llvm::isLegalUTF8Sequence(Begin, End) &&
+ llvm::sys::locale::isPrint(*Begin)) {
+ ++(*I);
+ return std::make_pair(SmallString<16>(Begin, End), true);
+ }
----------------
this could be simplified : the common case for ascii could be just looking at
`isPrint(*Begin);` (which implies CharSize == 1 and
llvm::isLegalUTF8Sequence(Begin, End))
So you could do it before computing CharSize
================
Comment at: clang/lib/Frontend/TextDiagnostic.cpp:132
+ // Convert it to UTF32 and check if it's printable.
+ if (llvm::isLegalUTF8Sequence(Begin, End)) {
+ llvm::UTF32 C;
----------------
I think we should check that `CharSize` is not greater than `Begin +
SourceLine.size() - *i` or something along those lines otherwise we may
overflow SourceLine.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D150843/new/
https://reviews.llvm.org/D150843
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