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/ast.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

(limited to 'Python/ast.c')

diff --git a/Python/ast.c b/Python/ast.c
index 7d30e5f864..fd42c0073d 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -100,8 +100,7 @@ expr_context_name(expr_context_ty ctx)
     case Param:
         return "Param";
     default:
-        assert(0);
-        return "(unknown)";
+        Py_UNREACHABLE();
     }
 }
 
@@ -759,8 +758,7 @@ num_stmts(const node *n)
             Py_FatalError(buf);
         }
     }
-    assert(0);
-    return 0;
+    Py_UNREACHABLE();
 }
 
 /* Transform the CST rooted at node * to the appropriate AST
-- 
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