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bpo-37072: Fix crash in PyAST_FromNodeObject() when flags is NULL (#13634) 

I'm confident that this fixes the reported crash. flags=NULL is treated as using the latest minor version.

https://bugs.python.org/issue37072
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Guido van Rossum 2019-05-28 16:44:58 -07:00 committed by GitHub
parent 44bfff2ec2
commit 77f0ed7a42
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2 changed files with 2 additions and 1 deletions
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Misc/NEWS.d/next/Core and Builtins/2019-05-28-18-18-55.bpo-37072.1Hewl3.rst Normal file
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@ -0,0 +1 @@
Fix crash in PyAST_FromNodeObject() when flags is NULL.

2
Python/ast.c
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@ -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);