Update optimizer.c

diff --git a/Python/optimizer.c b/Python/optimizer.c
index c38f28e224a8b6da9ca34397cafeb481e63f1378..f1d0ca811c7e00bcff0bb3e1e89ec1cfe08629f7 100644 (file)
--- a/Python/optimizer.c
+++ b/Python/optimizer.c
@@ -711,7 +711,10 @@ _PyJit_translate_single_bytecode_to_trace(
         max_length--;
     }
 
-    RESERVE_RAW(expansion->nuops + needs_guard_ip + 3 + (!OPCODE_HAS_NO_SAVE_IP(opcode)), "uop and various checks");
+    // _GUARD_IP leads to an exit.
+    max_length -= needs_guard_ip;
+
+    RESERVE_RAW(expansion->nuops + needs_guard_ip + 2 + (!OPCODE_HAS_NO_SAVE_IP(opcode)), "uop and various checks");
 
     ADD_TO_TRACE(_CHECK_VALIDITY, 0, 0, target);