aaron.ballman added inline comments.
================
Comment at: include/clang/AST/TypeLoc.h:533
+ } else {
+ BuiltinRange.setBegin(std::min(Range.getBegin(),
BuiltinRange.getBegin()));
+ BuiltinRange.setEnd(std::max(Range.getEnd(), BuiltinRange.getEnd()));
----------------
malcolm.parsons wrote:
> aaron.ballman wrote:
> > malcolm.parsons wrote:
> > > I suspect that using `min` and `max` on `SourceLocation`s is only valid
> > > if both locations are in the same file.
> > >
> > > Doing this
> > > long.h:
> > > ```
> > > long
> > > ```
> > > unsigned.cpp:
> > > ```
> > > unsigned
> > > #include "long.h"
> > > i;
> > > ```
> > >
> > > causes
> > > clang-query> match typeLoc()
> > > ...
> > > clang-query: llvm/tools/clang/lib/Frontend/DiagnosticRenderer.cpp:273:
> > > clang::SourceLocation retrieveMacroLocation(clang::SourceLocation,
> > > clang::FileID, clang::FileID, const
> > > llvm::SmallVectorImpl<clang::FileID>&, bool, const
> > > clang::SourceManager*): Assertion `SM->getFileID(Loc) == MacroFileID'
> > > failed.
> > >
> > > Is there a better way to combine `SourceRange`s, or should the final
> > > range be accumulated in DeclSpec.cpp?
> > Hmm, that's a good point, but I'm not aware of a better utility. Perhaps
> > @rsmith knows of one?
> I get the same assertion failure from a clang-query without my changes if I
> match a `CompoundStmt` that starts and ends in different files.
> So I don't think it's my fault.
> It's also a very rare case.
> OK to commit?
Thank you for checking. I think you are okay to commit, we can correct the bug
in another patch. However, if you wouldn't mind filing a bug in bugzilla so
that we don't lose this information, that would be great.
https://reviews.llvm.org/D25363
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