jcsxky wrote:
> > Could you please show your commands which reproduced this crash? I tested
> > locally with the following commands and it runs OK.
> > ```c++
> > clang++ -cc1 -std=c++17 -emit-pch -o test.cpp.ast test.cpp
> > clang++ -cc1 -x c++ -ast-merge test.cpp.ast /dev/null -ast-dump
> > ```
>
> That code is only an example, it differs not much of the real code that
> caused the crash. But it is not enough to use this code for the problem
> reproduction. This code can be used to get the case when the specialization
> list is changed before the insertion, but even then no crash happens:
>
> ```c++
> namespace N {
> template <unsigned X>
> int B = B<X - 1> + B<X - 2>;
> template <>
> int B<0> = 0;
> template <>
> int B<1> = 1;
> }
> int A = N::B<5>;
> ```
>
> With clang version 18.1.6 the original crash does not occur any more. The
> "original crash" was reproduced on specific source files of project
> "contour". Probably I can attach the files and command, but some changes can
> be required to make it work.
Could you please show me how to reproduce the crash in detail if possible? Then
I can debug this issue in my spare time.
https://github.com/llvm/llvm-project/pull/89887
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