https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82469
--- Comment #2 from Heiko Eißfeldt <heiko at hexco dot de> --- I took me a while to find a platform of mine where I got this error. Right now it happens here as well: Message: cpp --traditional -ffreestanding -P gcc_82469.c <built-in>: internal compiler error: in _cpp_process_line_notes, at libcpp/lex.c:1163 OS: Raspberry Pi, 32-Bit, Linux uname -a Linux raspberrypi 5.10.17-v7l+ #1421 SMP Thu May 27 14:00:13 BST 2021 armv7l GNU/Linux file /usr/bin/arm-linux-gnueabihf-cpp-8: /usr/bin/arm-linux-gnueabihf-cpp-8: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 3.2.0, BuildID[sha1]=f4424fc857eedcaef7da81cf953c3ae2788523e7, stripped gcc --version gcc (Raspbian 8.3.0-6+rpi1) 8.3.0 cpp --version cpp (Raspbian 8.3.0-6+rpi1) 8.3.0 Hardware is a Raspberry Pi Model 4 with 4GB. Thanks.