GH-122821: Simplify compilation of while statements to ensure consistency of offsets for sys.monitoring (GH-122934)

Author: markshannon

Include/internal/pycore_magic_number.h

@@ -255,6 +255,7 @@ Known values:
     Python 3.14a1 3601 (Fix miscompilation of private names in generic classes)
     Python 3.14a1 3602 (Add LOAD_SPECIAL. Remove BEFORE_WITH and BEFORE_ASYNC_WITH)
     Python 3.14a1 3603 (Remove BUILD_CONST_KEY_MAP)
+    Python 3.14a1 3604 (Do not duplicate test at end of while statements)
 
     Python 3.15 will start with 3650
 
@@ -267,7 +268,7 @@ PC/launcher.c must also be updated.
 
 */
 
-#define PYC_MAGIC_NUMBER 3603
+#define PYC_MAGIC_NUMBER 3604
 /* This is equivalent to converting PYC_MAGIC_NUMBER to 2 bytes
    (little-endian) and then appending b'\r\n'. */
 #define PYC_MAGIC_NUMBER_TOKEN \

Lib/test/test_capi/test_opt.py

@@ -274,6 +274,7 @@ def many_vars():
                 z0 = z1 = z2 = z3 = z4 = z5 = z6 = z7 = z8 = z9 = 42
                 while z9 > 0:
                     z9 = z9 - 1
+                    +z9
         """), ns, ns)
         many_vars = ns["many_vars"]