UseLayers segfault issue
When switching between -UseLayers=0 and -UseLayers=1, nfc segfaults. After recompilation with make, a pipeline succesfully compiles and run with either UseLayers enabled or not. But when switching to the opposite mode without recompiling, a segfault occurs.
Observed with Linux/AVX-512.
(gdb) set args ~/Wikibooks/wiki-books-all.xml -thread-num=2 -UseLayers >winfc
(gdb) run
0x00007ffff5a5903e in streamCompress64_1_DoSegment ()
(gdb) bt
#0 0x00007ffff5a5903e in streamCompress64_1_DoSegment ()
#1 0x00007fffcc584b79 in P8213beb05d9e980e08bac974d2b410b2322e5efd_ComputeThread10_134 ()
#2 0x00007fffcc56dcb8 in P8213beb05d9e980e08bac974d2b410b2322e5efd_MultithreadedDoSegment ()
#3 0x00007fffcc56b7de in P8213beb05d9e980e08bac974d2b410b2322e5efd_DoSegment ()
#4 0x00007fffcc4f80cd in P8213beb05d9e980e08bac974d2b410b2322e5efd_main ()
#5 0x00005555555789d7 in main (argc=<optimized out>, argv=<optimized out>) at /home/cameron/parabix-branch/tools/transcoders/nfc.cpp:478
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