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-rw-r--r--Misc/NEWS.d/next/Core and Builtins/2019-05-28-18-18-55.bpo-37072.1Hewl3.rst1
-rw-r--r--Python/ast.c2
2 files changed, 2 insertions, 1 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2019-05-28-18-18-55.bpo-37072.1Hewl3.rst b/Misc/NEWS.d/next/Core and Builtins/2019-05-28-18-18-55.bpo-37072.1Hewl3.rst
new file mode 100644
index 0000000..15bcc5e
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2019-05-28-18-18-55.bpo-37072.1Hewl3.rst
@@ -0,0 +1 @@
+Fix crash in PyAST_FromNodeObject() when flags is NULL. \ No newline at end of file
diff --git a/Python/ast.c b/Python/ast.c
index 7ffdf4a..12a45f9 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -786,7 +786,7 @@ PyAST_FromNodeObject(const node *n, PyCompilerFlags *flags,
/* borrowed reference */
c.c_filename = filename;
c.c_normalize = NULL;
- c.c_feature_version = flags->cf_feature_version;
+ c.c_feature_version = flags ? flags->cf_feature_version : PY_MINOR_VERSION;
if (TYPE(n) == encoding_decl)
n = CHILD(n, 0);