[3.14] pythongh-127604: Docs: Include a C stack in the faulthandler example (pythonGH-136081) (pythonGH-136102)

* pythongh-127604: Docs: Include a C stack in the `faulthandler` example (pythonGH-136081)
(cherry picked from commit 3947847)

Co-authored-by: Peter Bierma <[email protected]>

Author: miss-islington

Doc/library/faulthandler.rst

@@ -228,6 +228,41 @@ handler:
     Fatal Python error: Segmentation fault
 
     Current thread 0x00007fb899f39700 (most recent call first):
-      File "/home/python/cpython/Lib/ctypes/__init__.py", line 486 in string_at
+      File "/opt/python/Lib/ctypes/__init__.py", line 486 in string_at
       File "<stdin>", line 1 in <module>
+
+    Current thread's C stack trace (most recent call first):
+      Binary file "/opt/python/python", at _Py_DumpStack+0x42 [0x5b27f7d7147e]
+      Binary file "/opt/python/python", at +0x32dcbd [0x5b27f7d85cbd]
+      Binary file "/opt/python/python", at +0x32df8a [0x5b27f7d85f8a]
+      Binary file "/usr/lib/libc.so.6", at +0x3def0 [0x77b73226bef0]
+      Binary file "/usr/lib/libc.so.6", at +0x17ef9c [0x77b7323acf9c]
+      Binary file "/opt/python/build/lib.linux-x86_64-3.14/_ctypes.cpython-314d-x86_64-linux-gnu.so", at +0xcdf6 [0x77b7315dddf6]
+      Binary file "/usr/lib/libffi.so.8", at +0x7976 [0x77b73158f976]
+      Binary file "/usr/lib/libffi.so.8", at +0x413c [0x77b73158c13c]
+      Binary file "/usr/lib/libffi.so.8", at ffi_call+0x12e [0x77b73158ef0e]
+      Binary file "/opt/python/build/lib.linux-x86_64-3.14/_ctypes.cpython-314d-x86_64-linux-gnu.so", at +0x15a33 [0x77b7315e6a33]
+      Binary file "/opt/python/build/lib.linux-x86_64-3.14/_ctypes.cpython-314d-x86_64-linux-gnu.so", at +0x164fa [0x77b7315e74fa]
+      Binary file "/opt/python/build/lib.linux-x86_64-3.14/_ctypes.cpython-314d-x86_64-linux-gnu.so", at +0xc624 [0x77b7315dd624]
+      Binary file "/opt/python/python", at _PyObject_MakeTpCall+0xce [0x5b27f7b73883]
+      Binary file "/opt/python/python", at +0x11bab6 [0x5b27f7b73ab6]
+      Binary file "/opt/python/python", at PyObject_Vectorcall+0x23 [0x5b27f7b73b04]
+      Binary file "/opt/python/python", at _PyEval_EvalFrameDefault+0x490c [0x5b27f7cbb302]
+      Binary file "/opt/python/python", at +0x2818e6 [0x5b27f7cd98e6]
+      Binary file "/opt/python/python", at +0x281aab [0x5b27f7cd9aab]
+      Binary file "/opt/python/python", at PyEval_EvalCode+0xc5 [0x5b27f7cd9ba3]
+      Binary file "/opt/python/python", at +0x255957 [0x5b27f7cad957]
+      Binary file "/opt/python/python", at +0x255ab4 [0x5b27f7cadab4]
+      Binary file "/opt/python/python", at _PyEval_EvalFrameDefault+0x6c3e [0x5b27f7cbd634]
+      Binary file "/opt/python/python", at +0x2818e6 [0x5b27f7cd98e6]
+      Binary file "/opt/python/python", at +0x281aab [0x5b27f7cd9aab]
+      Binary file "/opt/python/python", at +0x11b6e1 [0x5b27f7b736e1]
+      Binary file "/opt/python/python", at +0x11d348 [0x5b27f7b75348]
+      Binary file "/opt/python/python", at +0x11d626 [0x5b27f7b75626]
+      Binary file "/opt/python/python", at PyObject_Call+0x20 [0x5b27f7b7565e]
+      Binary file "/opt/python/python", at +0x32a67a [0x5b27f7d8267a]
+      Binary file "/opt/python/python", at +0x32a7f8 [0x5b27f7d827f8]
+      Binary file "/opt/python/python", at +0x32ac1b [0x5b27f7d82c1b]
+      Binary file "/opt/python/python", at Py_RunMain+0x31 [0x5b27f7d82ebe]
+      <truncated rest of calls>
     Segmentation fault