akruis
diff --git a/‎Stackless/changelog.txt
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+5Lines changed: 5 additions & 0 deletions b/‎Stackless/changelog.txt
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diff --git a/‎Stackless/core/stacklesseval.c
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+4Lines changed: 4 additions & 0 deletions b/‎Stackless/core/stacklesseval.c
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+4Lines changed: 4 additions & 0 deletions
@@ -9,6 +9,11 @@ What's New in Stackless 3.X.X?
 
 *Release date: 20XX-XX-XX*
 
+- https://bitbucket.org/stackless-dev/stackless/issues/122
+  Disable the C-stack cache, if Py_REF_DEBUG is defined. The cache causes false
+  block leak errors from the test suite. The performance penalty is irrelevant in
+  debug builds.
+
 - https://bitbucket.org/stackless-dev/stackless/issues/119
   Fix a rare bug in the stack unwinding mechanism, that caused a SystemError
   exception or an assertion violation, if a __del__()-method or a weakref
 
@@ -67,6 +67,9 @@ cstack_dealloc(PyCStackObject *cst)
     slp_cstack_chain = cst;
     SLP_CHAIN_REMOVE(PyCStackObject, &slp_cstack_chain, cst, next,
                      prev);
+#ifdef Py_REF_DEBUG
+    PyObject_Del(cst);
+#else
     if (Py_SIZE(cst) >= CSTACK_SLOTS) {
         PyObject_Del(cst);
     }
@@ -77,6 +80,7 @@ cstack_dealloc(PyCStackObject *cst)
         cstack_cache[Py_SIZE(cst)] = cst;
         ++cstack_cachecount;
     }
+#endif
 }
Original file line number	Diff line number	Diff line change
`@@ -67,6 +67,9 @@ cstack_dealloc(PyCStackObject *cst)`
`67`	`67`	`slp_cstack_chain = cst;`
`68`	`68`	`SLP_CHAIN_REMOVE(PyCStackObject, &slp_cstack_chain, cst, next,`
`69`	`69`	`prev);`
	`70`	`+#ifdef Py_REF_DEBUG`
	`71`	`+ PyObject_Del(cst);`
	`72`	`+#else`
`70`	`73`	`if (Py_SIZE(cst) >= CSTACK_SLOTS) {`
`71`	`74`	`PyObject_Del(cst);`
`72`	`75`	`}`
`@@ -77,6 +80,7 @@ cstack_dealloc(PyCStackObject *cst)`
`77`	`80`	`cstack_cache[Py_SIZE(cst)] = cst;`
`78`	`81`	`++cstack_cachecount;`
`79`	`82`	`}`
	`83`	`+#endif`
`80`	`84`	`}`
`81`	`85`
`82`	`86`