[Bug c++/107327] internal compiler error: in tsubst_pack_expansion, at cp/pt.c:12930

["kaploceh at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107327

--- Comment #9 from Carlos E <kaploceh at gmail dot com> ---
(In reply to Martin Liška from comment #7)
> (In reply to Carlos E from comment #6)
> > (In reply to Martin Liška from comment #4)
> > > > When you say to attach a preprocessed source, what would be the most
> > > > accepted command that I should be running which can reliably show whatever
> > > > was preprocessed?   
> > > 
> > > Just append -E to the existing command line arguments, that would be fine.
> > 
> > done.
> 
> We need what was likely printed to stdout, or saved to a .o file.
> 
> See what's the pre-processed source file:
> echo '#include <stdio.h>' | gcc -x c - -E

thank you Martin. 

It did compile as Richard suggested with 10.4 

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/10.4.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --with-mpc-lib= --disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 10.4.0 (GCC) 

the preprocessed file was after installing 10.4.
I can revert to 10.2