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Data race in compile_template in sre.c #129983

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Data race in compile_template in sre.c#129983
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extension-modulesC modules in the Modules dirtopic-free-threadingtopic-regextype-bugAn unexpected behavior, bug, or error
@colesbury

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@colesbury
colesbury
opened on Feb 10, 2025

Bug report

Concurrent accesses to module_state->compile_template in the free threaded build

cpython/Modules/_sre/sre.c

Lines 1169 to 1177 in 1feaecc

/* delegate to Python code */
PyObject *func = module_state->compile_template;
if (func == NULL) {
func = PyImport_ImportModuleAttrString("re", "_compile_template");
if (func == NULL) {
return NULL;
}
Py_XSETREF(module_state->compile_template, func);
}

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