https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797
--- Comment #77 from Damien Merenne <dam at cosinux dot org> ---
I reproduced it twice, last time with:
libtool: compile:
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/./gcc/xgcc
-shared-libgcc
-B/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/./gcc
-nostdinc++
-L/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/arm-none-eabi/thumb/v6-m/nofp/libstdc++-v3/src
-L/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/arm-none-eabi/thumb/v6-m/nofp/libstdc++-v3/src/.libs
-L/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/arm-none-eabi/thumb/v6-m/nofp/libstdc++-v3/libsupc++/.libs
-B/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/package/743cf0321be3152777da4d05247a66d1552e70a2/arm-none-eabi/bin/
-B/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/package/743cf0321be3152777da4d05247a66d1552e70a2/arm-none-eabi/lib/
-isystem
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/package/743cf0321be3152777da4d05247a66d1552e70a2/arm-none-eabi/include
-isystem
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/package/743cf0321be3152777da4d05247a66d1552e70a2/arm-none-eabi/sys-include
-mthumb -march=armv6s-m -mfloat-abi=soft
-I/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/../libgcc
-I/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/arm-none-eabi/thumb/v6-m/nofp/libstdc++-v3/include/arm-none-eabi
-I/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/build/gcc-final/arm-none-eabi/thumb/v6-m/nofp/libstdc++-v3/include
-I/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/libsupc++
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi=2
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=bad_typeid.lo -g -O2 -mthumb -march=armv6s-m -mfloat-abi=soft -c
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/libsupc++/bad_typeid.cc
-o bad_typeid.o
In file included from
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/libsupc++/cxxabi.h:206,
from
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/libsupc++/atexit_arm.cc:24:
/Users/dam/.conan/data/arm_none_eabi_gcc_installer/9.1.0/bloomlife/testing/build/743cf0321be3152777da4d05247a66d1552e70a2/gcc-9.1.0/libstdc++-v3/libsupc++/typeinfo:36:10:
fatal error: bits/hash_bytes.h: No such file or directory
36 | #include <bits/hash_bytes.h>
| ^~~~~~~~~~~~~~~~~~~
