hokein added a comment.

In D116919#3236899 <https://reviews.llvm.org/D116919#3236899>, @mstorsjo wrote:

> The relanded version in rG41fbdfa4d5601cccbcdc0ded8ef35190d502f7f3 
> <https://reviews.llvm.org/rG41fbdfa4d5601cccbcdc0ded8ef35190d502f7f3> seems 
> to be breaking some builds with PCH for me, failing asserts like this:
>
>   clang: ../tools/clang/include/clang/Basic/SourceLocation.h:135: 
> clang::SourceLocation 
> clang::SourceLocation::getLocWithOffset(clang::SourceLocation::IntTy) const: 
> Assertion `((getOffset()+Offset) & MacroIDBit) == 0 && "offset overflow"' 
> failed.

Thanks for raising this. It would be great if you can provide a reproduce case 
and a more detailed log. A failed PCH build usually indicates something wrong 
around the ASTReader/ASTWriter code, but I didn't spot out any issue there. At 
the mean time, I will try to investigate it.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D116919/new/

https://reviews.llvm.org/D116919

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