From b2e5794870eb4728ddfaafc0f79a40299576434f Mon Sep 17 00:00:00 2001
From: Barry Warsaw <barry@python.org>
Date: Thu, 14 Sep 2017 18:13:16 -0700
Subject: bpo-31338 (#3374)

* Add Py_UNREACHABLE() as an alias to abort().
* Use Py_UNREACHABLE() instead of assert(0)
* Convert more unreachable code to use Py_UNREACHABLE()
* Document Py_UNREACHABLE() and a few other macros.
---
 Python/ceval.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'Python/ceval.c')

diff --git a/Python/ceval.c b/Python/ceval.c
index 08533a42bf..5b810f29d1 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -274,7 +274,7 @@ PyEval_RestoreThread(PyThreadState *tstate)
         if (_Py_IsFinalizing() && !_Py_CURRENTLY_FINALIZING(tstate)) {
             drop_gil(tstate);
             PyThread_exit_thread();
-            assert(0);  /* unreachable */
+            Py_UNREACHABLE();
         }
         errno = err;
     }
@@ -3430,7 +3430,7 @@ _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag)
 
         /* This should never be reached. Every opcode should end with DISPATCH()
            or goto error. */
-        assert(0);
+        Py_UNREACHABLE();
 
 error:
 
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