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-rw-r--r--Python/ceval.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/Python/ceval.c b/Python/ceval.c
index ef99594..b0371aa 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -542,7 +542,9 @@ eval_frame(PyFrameObject *f)
#define BASIC_POP() (*--stack_pointer)
#ifdef LLTRACE
-#define PUSH(v) (void)(BASIC_PUSH(v), lltrace && prtrace(TOP(), "push"))
+#define PUSH(v) { (void)(BASIC_PUSH(v), \
+ lltrace && prtrace(TOP(), "push")); \
+ assert(STACK_LEVEL() <= f->f_stacksize); }
#define POP() ((void)(lltrace && prtrace(TOP(), "pop")), BASIC_POP())
#else
#define PUSH(v) BASIC_PUSH(v)