https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86828
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to janus from comment #9) > (In reply to Richard Biener from comment #8) > > More details are needed here. > > What exactly do you need? > > > $ gfortran-7 -march=knl -Ofast -g c0.f90 > $ gdb ./a.out > [..] > (gdb) run > Starting program: /home/janus/fort/gfortran_bugs/86828_knl/a.out > > Program received signal SIGSEGV, Segmentation fault. > s (n=..., n=...) at c0.f90:26 > 26 liKOB = Y(n%list) > (gdb) bt > #0 s (n=..., n=...) at c0.f90:26 > #1 0x0000555555554a9b in knl_bug () at c0.f90:17 > #2 main (argc=argc@entry=1, argv=0x7fffffffe53a) at c0.f90:17 > #3 0x00007ffff7626b97 in __libc_start_main (main=0x555555554800 <main>, > argc=1, argv=0x7fffffffe298, > init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, > stack_end=0x7fffffffe288) > at ../csu/libc-start.c:310 > #4 0x0000555555554bca in _start () Which glibc are you using?
