[Bug bootstrap/102278] [12 regression] Bootstrap fails with LLVM 11.0.1 on powerpc-unknown-freebsd: libgcov-interface.c:201:1: internal compiler error

[pkubaj at anongoth dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102278

--- Comment #3 from Piotr Kubaj <pkubaj at anongoth dot pl> ---
Created attachment 51436
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51436&action=edit
build log

The full build log is attached. The used compilation flags and configuration
options are listed there.

To make sure it's not misoptimization, I also built now with (FreeBSD by
default uses -O2):
CFLAGS_FOR_TARGET="-O0" CXXFLAGS_FOR_TARGET="-O0" BOOT_CFLAGS="-O0"

It fails with another error:
/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/./prev-gcc/xg++
-B/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/./prev-gcc/
-B/usr/local/powerpc-portbld-freebsd13.0/bin/ -nostdinc++
-B/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/src/.libs
-B/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/libsupc++/.libs
 -isystem
/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/include/powerpc-portbld-freebsd13.0
 -isystem
/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/include
 -isystem
/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/libstdc++-v3/libsupc++
-L/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/src/.libs
-L/wrkdirs/usr/ports/lang/gcc12-devel/work/.build/prev-powerpc-portbld-freebsd13.0/libstdc++-v3/libsupc++/.libs
 -fno-PIE -c   -O0 -fno-checking -gtoggle -DIN_GCC -fPIC    -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-error=format-diag -Wmissing-format-attribute
-Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros
-Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I.
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/.
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../include
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../libcpp/include
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../libcody
-I/usr/local/include 
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../libdecnumber
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../libdecnumber/dpd
-I../libdecnumber
-I/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/../libbacktrace 
-DLIBICONV_PLUG -o opts.o -MT opts.o -MMD -MP -MF ./.deps/opts.TPo
/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/opts.c
/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/opts.c: In
function 'void print_filtered_help(unsigned int, unsigned int, unsigned int,
unsigned int, gcc_options*, unsigned int)':
/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/opts.c:1517:26:
error: '  ' directive output may be truncated writing 2 bytes into a region
of size between 1 and 256 [-Werror=format-truncation=]
 1517 |                       "%s  %s", help, _(use_diagnosed_msg));
      |                          ^~
/wrkdirs/usr/ports/lang/gcc12-devel/work/gcc-12-20210829/gcc/opts.c:1516:22:
note: 'snprintf' output between 37 and 292 bytes into a destination of size
256
 1516 |             snprintf (new_help, sizeof new_help,
      |             ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
 1517 |                       "%s  %s", help, _(use_diagnosed_msg));
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors