bruno added a comment.


>   Internal compiler error: LFS error for 
> "/Users/jfb/s/llvmm/debug/tools/clang/test/Index/Output/pch-from-libclang.c.tmp.mcp/14EC4PG1UTVLY/modules.idx"failed
>  to create unique file 
> /Users/jfb/s/llvmm/debug/tools/clang/test/Index/Output/pch-from-libclang.c.tmp.mcp/14EC4PG1UTVLY/modules.idx.lock-0ae18733:
>  No such file or directory

yay! I really like how it looks now, thanks for pushing on this.

> `clang -fmodules -fmodules-cache-path=...` is supposed to create the 
> directory for the cache path, including the parent directories, AFAIK. If 
> this doesn't happen it is a behavior change (and undesirable IMO).

Is `c-index-test` invoking `clang` or do we just have a similar interface? 
Perhaps it's not doing it right (haven't seen this problem happening directly 
while invoking clang). Should `-fallow-pch-with-compiler-errors` be considered 
somehow here?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D65846/new/

https://reviews.llvm.org/D65846



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