[Bug c/78691] ICE compiling Linux PPC boot code

["gcc at d-silva dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78691

--- Comment #2 from Alastair D'Silva <gcc@d-silva.org> ---
The same problem also occurs when compiling the linux x86 boot code
arch/x86/boot/printf.c, which results in a very similar testcase:


~/tmp/gcc-c46915880dca92/bin/x86_64-unknown-linux-gnu-cc -m16  -Os -c
testcase.i
testcase.i: In function 'fn1':
testcase.i:1:5: internal compiler error: tree check: expected integer_type or
enumeral_type or boolean_type or real_type or fixed_point_type, have
pointer_type in int_fits_type_p, at tree.c:9152
 int fn1(char *p1, char *p2) {
     ^~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

~/tmp/gcc-c46915880dca92/bin/x86_64-unknown-linux-gnu-cc -v
Using built-in specs.
COLLECT_GCC=/home/adsilva/tmp/gcc-c46915880dca92/bin/x86_64-unknown-linux-gnu-cc
COLLECT_LTO_WRAPPER=/home/adsilva/tmp/gcc-c46915880dca92/bin/../libexec/gcc/x86_64-unknown-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /workspace/.build/src/gcc-git/configure
--build=x86_64-build_pc-linux-gnu --host=x86_64-build_pc-linux-gnu
--target=x86_64-unknown-linux-gnu --prefix=/workspace/x-tools
--with-sysroot=/workspace/x-tools/x86_64-unknown-linux-gnu/sysroot
--enable-languages=c,c++ --with-pkgversion='crosstool-NG
crosstool-ng-1.22.0-201-g11cb2dd' --enable-__cxa_atexit --enable-libmudflap
--disable-libgomp --disable-libssp --disable-libquadmath
--disable-libquadmath-support --enable-libsanitizer
--with-gmp=/workspace/.build/x86_64-unknown-linux-gnu/buildtools
--with-mpfr=/workspace/.build/x86_64-unknown-linux-gnu/buildtools
--with-mpc=/workspace/.build/x86_64-unknown-linux-gnu/buildtools
--with-isl=/workspace/.build/x86_64-unknown-linux-gnu/buildtools --enable-lto
--enable-threads=posix --enable-target-optspace --with-linker-hash-style=both
--enable-plugin --enable-gold --disable-nls --disable-multilib
--with-local-prefix=/workspace/x-tools/x86_64-unknown-linux-gnu/sysroot
--enable-long-long
Thread model: posix
gcc version 7.0.0 20161205 (experimental) (crosstool-NG
crosstool-ng-1.22.0-201-g11cb2dd)