Breakpoint 1 at 0x100464b60: file /usr/src/debug/bison-3.8.1.27-dd6e/src/main.c, line 65. Breakpoint 2 at 0x100464b78: file /usr/src/debug/bison-3.8.1.27-dd6e/src/main.c, line 67. Breakpoint 3 at 0x10041d140: file /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c, line 722. Breakpoint 4 at 0x100422168: file /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c, line 903. Breakpoint 5 at 0x10041d2a7: file /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c, line 785. Breakpoint 6 at 0x100457960: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c, line 617. Breakpoint 7 at 0x100457100: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c, line 147. Breakpoint 8 at 0x1004574ce: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c, line 475. Breakpoint 9 at 0x10044ea50: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c, line 315. Breakpoint 10 at 0x10044ea54: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c, line 316. Breakpoint 11 at 0x10044ea54: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c, line 318. Breakpoint 12 at 0x10044ea74: file /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c, line 320. [New Thread 7864.0x2680] [New Thread 7864.0x7d0] [New Thread 7864.0x215c] [New Thread 7864.0xf5c] Thread 1 "bison" hit Breakpoint 1, main (argc=9, argv=0xffffcb70) at /usr/src/debug/bison-3.8.1.27-dd6e/src/main.c:65 Breakpoint 13 at 0x1801670f0: pthread_mutex_lock. (2 locations) Thread 1 "bison" hit Breakpoint 2, main (argc=9, argv=0xffffcb70) at /usr/src/debug/bison-3.8.1.27-dd6e/src/main.c:67 Thread 1 "bison" hit Breakpoint 4, output () at /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c:903 903 output_skeleton (); Thread 1 "bison" hit Breakpoint 3, output_skeleton () at /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c:722 722 { Thread 1 "bison" hit Breakpoint 5, output_skeleton () at /usr/src/debug/bison-3.8.1.27-dd6e/src/output.c:785 785 pid = create_pipe_bidi ("m4", m4, argv, Thread 1 "bison" hit Breakpoint 6, create_pipe_bidi (progname=progname@entry=0x10046c518 <__func__.2+600> "m4", prog_path=prog_path@entry=0x1004686b3 "/usr/bin/m4", prog_argv=prog_argv@entry=0xffffc990, directory=directory@entry=0x0, null_stderr=null_stderr@entry=false, slave_process=slave_process@entry=true, exit_on_error=exit_on_error@entry=true, fd=fd@entry=0xffffc988) at /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c:617 617 { Thread 1 "bison" hit Breakpoint 7, create_pipe (progname=progname@entry=0x10046c518 <__func__.2+600> "m4", prog_path=prog_path@entry=0x1004686b3 "/usr/bin/m4", prog_argv=prog_argv@entry=0xffffc990, directory=directory@entry=0x0, pipe_stdin=pipe_stdin@entry=true, pipe_stdout=pipe_stdout@entry=true, prog_stdin=prog_stdin@entry=0x0, prog_stdout=prog_stdout@entry=0x0, null_stderr=null_stderr@entry=false, slave_process=slave_process@entry=true, exit_on_error=exit_on_error@entry=true, fd=fd@entry=0xffffc988) at /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c:147 147 { Thread 1 "bison" hit Breakpoint 8, create_pipe (progname=progname@entry=0x10046c518 <__func__.2+600> "m4", prog_path=prog_path@entry=0x1004686b3 "/usr/bin/m4", prog_argv=prog_argv@entry=0xffffc990, directory=directory@entry=0x0, pipe_stdin=pipe_stdin@entry=true, pipe_stdout=pipe_stdout@entry=true, prog_stdin=prog_stdin@entry=0x0, prog_stdout=prog_stdout@entry=0x0, null_stderr=null_stderr@entry=false, slave_process=slave_process@entry=true, exit_on_error=exit_on_error@entry=true, fd=fd@entry=0xffffc988) at /usr/src/debug/bison-3.8.1.27-dd6e/lib/spawn-pipe.c:475 475 block_fatal_signals (); Thread 1 "bison" hit Breakpoint 9, block_fatal_signals () at /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c:315 315 { Thread 1 "bison" hit Breakpoint 10, block_fatal_signals () at /usr/src/debug/bison-3.8.1.27-dd6e/lib/fatal-signal.c:318 318 if (mt) gl_lock_lock (fatal_signals_block_lock); 0x0000000100000000 in ?? () #0 0x0000000100000000 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) A debugging session is active. Inferior 1 [process 7864] will be killed. Quit anyway? (y or n) [answered Y; input not from terminal]