https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40770
--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to 康 珊 from comment #21) > $ gcc -m64 -g -O2 -fopenmp-simd -fPIC -Wall test_sincos.c -o test_sincos -lm > -march=skylake-avx512 -ffast-math -ftree-loop-vectorize Try adding -fno-builtin-sincos here > $ ldd test_sincos > linux-vdso.so.1 (0x00007ffd2393f000) > libm.so.6 => /lib64/libm.so.6 (0x00007f574f49d000) > libc.so.6 => /lib64/libc.so.6 (0x00007f574f2a2000) > /lib64/ld-linux-x86-64.so.2 (0x00007f574f601000) > My gcc version is "10.1.1 20200507". > And I have uploaded my test source file.