I have enabled the debug symbol on pcp package, reproduced the segfault and got the backtrace
Core was generated by `pmatop'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000055849d1a82fd in photosyst (si=<optimized out>) at photosyst.c:493 493 if (nrdisk == 0) (gdb) bt #0 0x000055849d1a82fd in photosyst (si=<optimized out>) at photosyst.c:493 #1 0x000055849d19c950 in engine () at atop.c:576 #2 0x000055849d19c133 in main (argc=1, argv=<optimized out>) at atop.c:465 (gdb) p nrdisk $1 = 1
