dblaikie added a comment.

In D87673#2290926 <https://reviews.llvm.org/D87673#2290926>, @sammccall wrote:

> In D87673#2290838 <https://reviews.llvm.org/D87673#2290838>, @dblaikie wrote:
>
>> In D87673#2275940 <https://reviews.llvm.org/D87673#2275940>, @sammccall 
>> wrote:
>>
>>> Thanks, this seems better than crashing.
>>> The practical result isn't wonderful: the two are going to fight over index 
>>> files to some extent. But this can happen with different clangd versions 
>>> (that use different index format versions) anyway. So this is really just 
>>> graceful recovery from a bad situation.
>>>
>>> In D87673#2273347 <https://reviews.llvm.org/D87673#2273347>, @ArcsinX wrote:
>>>
>>>> Unsure about test for this
>>>
>>> Agree, testing this seems hard and not that useful.
>>
>> FWIW here's how to test codepaths only reachable when zlib is not available:
>>
>> ./llvm/test/tools/llvm-dwp/X86/nocompress.test:
>>
>>   REQUIRES: !zlib
>
> Yep, that requires a checked-in binary file, which in the case of that test 
> is in a standard stable format, which this data is not, so we'd also need 
> tools to regenerate it. And we don't have APIs to generate the file without 
> compression if zlib is available (because we never want to do that), so we'd 
> need to add those or require anyone touching the file format to build a 
> no-zlib tree to regenerate the file.
> None of this is impossible, but this is pretty unlikely to catch a bug, and 
> it's very unlikely to be a high-impact bug..

Ah, fair enough. Might be nice to have a flag to request the uncompressed 
behavior even when compression's available - for testing purposes and such, but 
given the current implementation, yeah, don't see a tidy way to test it.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87673/new/

https://reviews.llvm.org/D87673

_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits

Reply via email to