gh-101952: Fix possible segfault in BUILD_SET opcode (#101958)

python · Feb 16, 2023 · 68bd8c5 · 68bd8c5
1 parent 924a3bf
commit 68bd8c5
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diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-02-16-16-57-23.gh-issue-101952.Zo1dlq.rst b/Misc/NEWS.d/next/Core and Builtins/2023-02-16-16-57-23.gh-issue-101952.Zo1dlq.rst
@@ -0,0 +1 @@
+Fix possible segfault in ``BUILD_SET`` opcode, when new set created.
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
@@ -1302,6 +1302,8 @@ dummy_func(
 
         inst(BUILD_SET, (values[oparg] -- set)) {
             set = PySet_New(NULL);
+            if (set == NULL)
+                goto error;
             int err = 0;
             for (int i = 0; i < oparg; i++) {
                 PyObject *item = values[i];

diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h