...

LC_COLLATE=C sort tt | /usr/bin/less
process attached to gdb using -p <Cygwin-pid>
Terminate less with 'q' while process is running

64-@@ ./gdb.sh 7036
...

Attaching to process 6888
[New Thread 6888.0x1ae4]
[New Thread 6888.0x1ad4]
[New Thread 6888.0x1630]
Reading symbols from /usr/bin/sort.exe...Reading symbols from /usr/lib/debug//usr/bin/sort.exe.dbg...done.
done.
0x0000000076f6afb1 in ntdll!DbgBreakPoint () from /drv/c/Windows/SYSTEM32/ntdll.dll
(gdb) cont
Continuing.
[Thread 6888.0x1630 exited with code 0]

Program received signal SIGPIPE, Broken pipe.
[Switching to Thread 6888.0x1ae4]
0x00000001004026f6 in write_line (line=0xffffb9d0, fp=0x130, output_file=0xb0 <error: Cannot access memory at address 0xb0>)
    at /usr/src/debug/coreutils-8.26-2/src/sort.c:2792
2792          if (fwrite (buf, 1, n_bytes, fp) != n_bytes)
(gdb) bt
#0  0x00000001004026f6 in write_line (line=0xffffb9d0, fp=0x130, output_file=0xb0 <error: Cannot access memory at address 0xb0>)
    at /usr/src/debug/coreutils-8.26-2/src/sort.c:2792
#1  0x00000000ffffb9cc in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) cont
Continuing.

Program received signal SIGPIPE, Broken pipe.
0x00000001004026f6 in write_line (line=0xffffb520, fp=0x130, output_file=0xb0 <error: Cannot access memory at address 0xb0>)
    at /usr/src/debug/coreutils-8.26-2/src/sort.c:2792
2792          if (fwrite (buf, 1, n_bytes, fp) != n_bytes)
(gdb) bt
#0  0x00000001004026f6 in write_line (line=0xffffb520, fp=0x130, output_file=0xb0 <error: Cannot access memory at address 0xb0>)
    at /usr/src/debug/coreutils-8.26-2/src/sort.c:2792
#1  0x00000000ffffb51c in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) cont
Continuing.
[Inferior 1 (process 6888) exited with code 015] <==== NOT killed by me
(gdb) quit
64-@@ 

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