[Bug tree-optimization/100102] [8/9/10/11 Regression] ICE in tsubst, at cp/pt.c:15310

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100102

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Erik Schnetter from comment #0)
> I am using GCC 10.3.0 on x86_64 GNU/Linux. GCC was built via Spack, and is
> called from nvcc.
> 
> I encounter the following ICE:
...
> GCC 10.2.0 compiles the code without problems.

I tried plain GCC 10.2.0 with the attached preprocessed source and it ICEs
the same way.  I suppose there might be some header differences?

> To reproduce, compile the attached preprocessed source code with the options
> 
> g++ -std=c++14 -c -x c++ -fPIC -fopenmp -Werror=return-type -pthread -O2
> -m64 -g -gdwarf-2 "AMReX_BlockMutex.cpp.ii" -o "AMReX_BlockMutex.cpp.o"

It already crashes with just g++ -std=c++14 for me (since the crash is inside
the C++ frontend).