shawnl added inline comments.
================
Comment at: lib/Lex/PPMacroExpansion.cpp:1509
+ if (LastSep == StringRef::npos && LangOpts.MicrosoftExt)
+ LastSep = PLFileName.find_last_of('\\');
+
----------------
What is the path name uses both \ and / to separate paths? I think this needs
to be:
```
if (LangOpts.MicrosoftExt) {
size_t BackSlash = PLFileName.take_back(PLFileName.size() -
LastSep).find_last_of('\\');
if (BackSlash != StringRef::npos)
LastSep = BackSlash;
}
```
Repository:
rC Clang
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D61756/new/
https://reviews.llvm.org/D61756
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