bpo-40750: Do not expand the new parser debug flags if Py_BUILD_CORE is not defined (GH-20393)

miss-islington · pablogsal · web-flow · commit 31084be618b6 · 2020-05-25T12:37:56.000-07:00
(cherry picked from commit deb4355) Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
diff --git a/Parser/pegen/parse.c b/Parser/pegen/parse.c
@@ -1,7 +1,7 @@
 // @generated by pegen.py from ./Grammar/python.gram
 #include "pegen.h"
 
-#ifdef Py_DEBUG
+#if defined(Py_DEBUG) && defined(Py_BUILD_CORE)
 extern int Py_DebugFlag;
 #define D(x) if (Py_DebugFlag) x;
 #else
diff --git a/Tools/peg_generator/pegen/c_generator.py b/Tools/peg_generator/pegen/c_generator.py
@@ -29,7 +29,7 @@
 EXTENSION_PREFIX = """\
 #include "pegen.h"
 
-#ifdef Py_DEBUG
+#if defined(Py_DEBUG) && defined(Py_BUILD_CORE)
 extern int Py_DebugFlag;
 #define D(x) if (Py_DebugFlag) x;
 #else
