https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100441
--- Comment #2 from tim blechmann <tim at klingt dot org> --- i've been able to reproduce this on a raspberry pi running ubuntu: ``` ubuntu@pi4:~/scratch$ g++-10 x.i -S -fpermissive -w -O -v Using built-in specs. COLLECT_GCC=g++-10 Target: aarch64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 10.2.0-5ubuntu1~20.04' --with-bugurl=file:///usr/share/doc/gcc-10/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-10 --program-prefix=aarch64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu Thread model: posix ``` i've also seen this with a yocto toolchain: ``` Configured with: ../../../../../../work-shared/gcc-9.2.0-r0/gcc-9.2.0/configure --build=x86_64-linux --host=x86_64-yoctosdk-linux --target=aarch64-poky-linux --prefix=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr --exec_prefix=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr --bindir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/bin/aarch64-poky-linux --sbindir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/bin/aarch64-poky-linux --libexecdir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/libexec/aarch64-poky-linux --datadir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/share --sysconfdir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/etc --sharedstatedir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/com --localstatedir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/var --libdir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/lib/aarch64-poky-linux --includedir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/include --oldincludedir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/include --infodir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/share/info --mandir=/opt/Yocto/1.2.0/sysroots/x86_64-yoctosdk-linux/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/var/build/bamboo-build/tmp/work/x86_64-nativesdk-yoctosdk-linux/gcc-cross-canadian-aarch64/9.2.0-r0/recipe-sysroot --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-multilib --enable-default-pie --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=aarch64-poky-linux- --without-local-prefix --enable-lto --disable-libssp --enable-libitm --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --without-isl --with-gxx-include-dir=/not/exist/usr/include/c++/9.2.0 --with-build-time-tools=/var/build/bamboo-build/tmp/work/x86_64-nativesdk-yoctosdk-linux/gcc-cross-canadian-aarch64/9.2.0-r0/recipe-sysroot-native/usr/aarch64-poky-linux/bin --with-sysroot=/not/exist --with-build-sysroot=/var/build/bamboo-build/tmp/work/x86_64-nativesdk-yoctosdk-linux/gcc-cross-canadian-aarch64/9.2.0-r0/recipe-sysroot --enable-poison-system-directories --disable-static --enable-nls --with-glibc-version=2.28 --enable-initfini-array --enable-__cxa_atexit Thread model: posix gcc version 9.2.0 (GCC) ``` alternative configuration
