https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116447
--- Comment #2 from Torbjorn SVENSSON <azoff at gcc dot gnu.org> --- (In reply to Richard Earnshaw from comment #1) > How was the compiler configured and what's the full command line used when > building the test? The toolchain was built using the scripts here: https://github.com/STMicroelectronics/gnu-tools-for-stm32/blob/13.3.rel1/build-toolchain.sh#L417 The resulting configure invocation is: /build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/src/gcc/configure \ --target=arm-none-eabi \ --prefix=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native \ --libexecdir=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/lib \ --infodir=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/share/doc/gcc-arm-none-eabi/info \ --mandir=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/share/doc/gcc-arm-none-eabi/man \ --htmldir=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/share/doc/gcc-arm-none-eabi/html \ --pdfdir=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/share/doc/gcc-arm-none-eabi/pdf \ --enable-checking=release \ --enable-languages=c,c++ \ --enable-plugins \ --disable-decimal-float \ --disable-libffi \ --disable-libgomp \ --disable-libmudflap \ --disable-libquadmath \ --disable-libssp \ --disable-libstdcxx-pch \ --disable-nls \ --disable-shared \ --disable-threads \ --disable-tls \ --with-gnu-as \ --with-gnu-ld \ --with-newlib \ --with-headers=yes \ --with-python-dir=share/gcc-arm-none-eabi \ --with-sysroot=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/install-native/arm-none-eabi \ --with-zstd=no \ --build=x86_64-linux-gnu \ --host=x86_64-linux-gnu \ --with-gmp=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/build-native/host-libs/usr \ --with-mpfr=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/build-native/host-libs/usr \ --with-mpc=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/build-native/host-libs/usr \ --with-isl=/build/gnu-tools-for-stm32_13.3.rel1.20240926-1715/build-native/host-libs/usr \ '--with-host-libstdcxx=-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' \ '--with-pkgversion=GNU Tools for STM32 13.3.rel1.20240926-1715' \ --with-multilib-list=rmprofile,aprofile The test was built with several additional flags, but I've reduced it down to these flags that still reproduce the issue: arm-none-eabi-g++ g++.dg/cpp23/ext-floating13.C \ -mthumb -mcpu=cortex-m55 -mfloat-abi=hard -mfpu=auto \ -std=gnu++23 \ -Wl,--start-group -lc -lm -Wl,--end-group --specs=rdimon.specs -o /dev/null .../ld: /tmp/ccAtbb7c.o:(.rodata+0x0): undefined reference to `typeinfo for _Float16' collect2: error: ld returned 1 exit status
