https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100788
--- Comment #7 from seberg <sebastian-gcc at sipsolutions dot net> --- Oh, interesting. You are right, if I run it on the preprocessed file it succeeds (note the `tmp/preprocessed.c`: x86_64-linux-gnu-gcc -pthread --coverage -O0 -ggdb -g -ffile-prefix-map=/build/python3.9-RNBry6/python3.9-3.9.2=. -fstack-protector-strong -g -fwrapv -O2 -D_FORTIFY_SOURCE=2 -fPIC -DNPY_INTERNAL_BUILD=1 -DHAVE_NPY_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -DHAVE_CBLAS -Ibuild/src.linux-x86_64-3.9/numpy/core/src/common -Ibuild/src.linux-x86_64-3.9/numpy/core/src/umath -Inumpy/core/include -Ibuild/src.linux-x86_64-3.9/numpy/core/include/numpy -Ibuild/src.linux-x86_64-3.9/numpy/distutils/include -Inumpy/core/src/common -Inumpy/core/src -Inumpy/core -Inumpy/core/src/npymath -Inumpy/core/src/multiarray -Inumpy/core/src/umath -Inumpy/core/src/npysort -Inumpy/core/src/_simd -I/usr/include/python3.9 -Ibuild/src.linux-x86_64-3.9/numpy/core/src/common -Ibuild/src.linux-x86_64-3.9/numpy/core/src/npymath -c /tmp/preprocessed.c -o build/temp.linux-x86_64-3.9/build/src.linux-x86_64-3.9/numpy/core/src/multiarray/einsum_sumprod.o -msse2 -msse3 <no error> Just to cover my ground the preprocessed file was generated with: x86_64-linux-gnu-gcc -pthread --coverage -Wno-unused-result -Wsign-compare -O0 -ggdb -g -ffile-prefix-map=/build/python3.9-RNBry6/python3.9-3.9.2=. -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -Werror=vla -Werror=nonnull -Werror=pointer-arith -Wlogical-op -Werror=unused-function -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DNPY_INTERNAL_BUILD=1 -DHAVE_NPY_CONFIG_H=1 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE=1 -D_LARGEFILE64_SOURCE=1 -DHAVE_CBLAS -Ibuild/src.linux-x86_64-3.9/numpy/core/src/common -Ibuild/src.linux-x86_64-3.9/numpy/core/src/umath -Inumpy/core/include -Ibuild/src.linux-x86_64-3.9/numpy/core/include/numpy -Ibuild/src.linux-x86_64-3.9/numpy/distutils/include -Inumpy/core/src/common -Inumpy/core/src -Inumpy/core -Inumpy/core/src/npymath -Inumpy/core/src/multiarray -Inumpy/core/src/umath -Inumpy/core/src/npysort -Inumpy/core/src/_simd -I/usr/include/python3.9 -Ibuild/src.linux-x86_64-3.9/numpy/core/src/common -Ibuild/src.linux-x86_64-3.9/numpy/core/src/npymath -c build/src.linux-x86_64-3.9/numpy/core/src/multiarray/einsum_sumprod.c -E > /tmp/preprocessed.c
