[Bug c++/94493] FreeBSD-ports lang/gcc9 (9.3.0) on FreeBSD 13 crash if building ftp/filezilla

[gcc-bugs at opsec dot eu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94493

--- Comment #7 from Kurt Jaeger <gcc-bugs at opsec dot eu> ---
This command produces -E output, see attached out.txt and err.txt:

g++9 \
        -v \
        -E \
        -std=c++17 \
        -DHAVE_CONFIG_H \
        -I. \
        -I../../src/include \
        -isystem /usr/local/include \
        -fpch-preprocess \
        -fno-strict-aliasing \
        -fwrapv \
        -fno-aggressive-loop-optimizations \
        -fsanitize=undefined \
        -O2 \
        -Wl,-rpath=/usr/local/lib/gcc9 \
        -Wall \
        -Wextra \
        -g \
        engine_context.cpp

Adding -fstack-protector-strong causes it to crash without producing output.