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authorSerhiy Storchaka <storchaka@gmail.com>2016-10-07 18:55:49 (GMT)
committerSerhiy Storchaka <storchaka@gmail.com>2016-10-07 18:55:49 (GMT)
commit5e80855af3537f9715b33539d5b9860ca533a288 (patch)
treeb6edf52a3ef9345a3ce4d44e38cf4d585f7ef9c2 /Parser
parent3df053e556c27dd8ed8fd20e1f1d652284132ff1 (diff)
parentcf3806026b4f9784f97fce168695c3b4a6bbd8a5 (diff)
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Issue #24098: Fixed possible crash when AST is changed in process of
compiling it.
Diffstat (limited to 'Parser')
-rw-r--r--Parser/asdl_c.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/Parser/asdl_c.py b/Parser/asdl_c.py
index 17c8517..725d73b 100644
--- a/Parser/asdl_c.py
+++ b/Parser/asdl_c.py
@@ -526,6 +526,13 @@ class Obj2ModVisitor(PickleVisitor):
self.emit("res = obj2ast_%s(PyList_GET_ITEM(tmp, i), &value, arena);" %
field.type, depth+2, reflow=False)
self.emit("if (res != 0) goto failed;", depth+2)
+ self.emit("if (len != PyList_GET_SIZE(tmp)) {", depth+2)
+ self.emit("PyErr_SetString(PyExc_RuntimeError, \"%s field \\\"%s\\\" "
+ "changed size during iteration\");" %
+ (name, field.name),
+ depth+3, reflow=False)
+ self.emit("goto failed;", depth+3)
+ self.emit("}", depth+2)
self.emit("asdl_seq_SET(%s, i, value);" % field.name, depth+2)
self.emit("}", depth+1)
else: