Description:
gcc reports internal compiler error when use -dH option, if the processed header includes header which is not found.
I report it here because this gcc internal fault cases Arch to prompt a message in terminal:

> gcc: internal compiler error: Aborted (program cc1)
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <https://bugs.archlinux.org/> for instructions.

Additional info:
my gcc version and info:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.3.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc-5.3.0/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release
Thread model: posix
gcc version 5.3.0 (GCC)

Steps to reproduce:
1. edit a hello.h with just one line:
$ cat hello.h
#include <header-not-existing>

2. type the following gcc command will cause the compiler error:
$ $ gcc -dH hello.h
hello.h:1:31: fatal error: header-not-existing: No such file or directory
gcc: internal compiler error: Aborted (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.