4530922cfd
This fixes a PCM non-determinism regression reported here: https://github.com/llvm/llvm-project/pull/134560#issuecomment-2797744370 There was a bit in `SubstNonTypeTemplateParmPackExpr` which we missed to serialize, and that bit eventually propagates to `SubstNonTypeTemplateParmExpr`. As a drive by, improve serialization for PackIndex on SubstNonTypeTemplateParmExpr by using the newly introduced UnsignedOrNone helpers. There are no release notes since this regression was never released.
C language Family Front-end
Welcome to Clang.
This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.
Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.
If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers:
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Information on Clang: http://clang.llvm.org/
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Building and using Clang: http://clang.llvm.org/get_started.html
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Clang Static Analyzer: http://clang-analyzer.llvm.org/
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Information on the LLVM project: http://llvm.org/
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If you have questions or comments about Clang, a great place to discuss them is on the Clang forums:
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If you find a bug in Clang, please file it in the LLVM bug tracker: