[mypyc] Release boxed operands in tagged true division (#21246)

hauntsaninja · web-flow · commit 06c9e271783e · 2026-04-16T09:10:50.000+01:00
Found by @devdanzin
diff --git a/mypyc/lib-rt/int_ops.c b/mypyc/lib-rt/int_ops.c
@@ -590,9 +590,15 @@ double CPyTagged_TrueDivide(CPyTagged x, CPyTagged y) {
         PyObject *yo = CPyTagged_AsObject(y);
         PyObject *result = PyNumber_TrueDivide(xo, yo);
         if (result == NULL) {
+            Py_DECREF(xo);
+            Py_DECREF(yo);
             return CPY_FLOAT_ERROR;
         }
-        return PyFloat_AsDouble(result);
+        double value = PyFloat_AsDouble(result);
+        Py_DECREF(xo);
+        Py_DECREF(yo);
+        Py_DECREF(result);
+        return value;
     }
     return 1.0;
 }

Original file line number	Diff line number	Diff line change
`@@ -590,9 +590,15 @@ double CPyTagged_TrueDivide(CPyTagged x, CPyTagged y) {`
`590`	`590`	`PyObject *yo = CPyTagged_AsObject(y);`
`591`	`591`	`PyObject *result = PyNumber_TrueDivide(xo, yo);`
`592`	`592`	`if (result == NULL) {`
	`593`	`+ Py_DECREF(xo);`
	`594`	`+ Py_DECREF(yo);`
`593`	`595`	`return CPY_FLOAT_ERROR;`
`594`	`596`	`}`
`595`		`- return PyFloat_AsDouble(result);`
	`597`	`+ double value = PyFloat_AsDouble(result);`
	`598`	`+ Py_DECREF(xo);`
	`599`	`+ Py_DECREF(yo);`
	`600`	`+ Py_DECREF(result);`
	`601`	`+ return value;`
`596`	`602`	`}`
`597`	`603`	`return 1.0;`
`598`	`604`	`}`