commit 3ab24bdd47fdd9d45719ad49f93d3878d4442d7e
author INADA Naoki <methane@users.noreply.github.com> Wed Feb 22 02:33:24 2017 +0900
committer GitHub <noreply@github.com> Wed Feb 22 02:33:24 2017 +0900
tree fac99d736cd7108e0ad302d51158e3f51b14b09c
parent e48fd93bbb36c6d80aa4eb6af09f58c69d8cf965

bpo-29607: Fix stack_effect computation for CALL_FUNCTION_EX (GH-219)

(cherry picked from commit 3a9ac827c7c87dffc60c4200323948551bcb6662)

Python/compile.c

diff --git a/Python/compile.c b/Python/compile.c
index 0e16075..6255ec7 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1043,7 +1043,7 @@
         case CALL_FUNCTION_KW:
             return -oparg-1;
         case CALL_FUNCTION_EX:
-            return - ((oparg & 0x01) != 0) - ((oparg & 0x02) != 0);
+            return -1 - ((oparg & 0x01) != 0);
         case MAKE_FUNCTION:
             return -1 - ((oparg & 0x01) != 0) - ((oparg & 0x02) != 0) -
                 ((oparg & 0x04) != 0) - ((oparg & 0x08) != 0);