Correct micro release number and add a couple of asserts. (GH-25224)

Author: markshannon

Lib/importlib/_bootstrap_external.py

@@ -348,7 +348,7 @@ def _write_atomic(path, data, mode=0o666):
 #     Python 3.10a2 3433 (RERAISE restores f_lasti if oparg != 0)
 #     Python 3.10a6 3434 (PEP 634: Structural Pattern Matching)
 #     Python 3.10a7 3435 Use instruction offsets (as opposed to byte offsets).
-#     Python 3.10a7 3436 (Add GEN_START bytecode #43683)
+#     Python 3.10b1 3436 (Add GEN_START bytecode #43683)
 
 #
 # MAGIC must change whenever the bytecode emitted by the compiler may no

Python/compile.c

@@ -6162,8 +6162,7 @@ stackdepth(struct compiler *c)
         entryblock = b;
         nblocks++;
     }
-    if (!entryblock)
-        return 0;
+    assert(entryblock!= NULL);
     stack = (basicblock **)PyObject_Malloc(sizeof(basicblock *) * nblocks);
     if (!stack) {
         PyErr_NoMemory();
@@ -6725,14 +6724,15 @@ assemble(struct compiler *c, int addNone)
         nblocks++;
         entryblock = b;
     }
+    assert(entryblock != NULL);
 
     if (insert_generator_prefix(c, entryblock)) {
         goto error;
     }
 
     /* Set firstlineno if it wasn't explicitly set. */
     if (!c->u->u_firstlineno) {
-        if (entryblock && entryblock->b_instr && entryblock->b_instr->i_lineno)
+        if (entryblock->b_instr && entryblock->b_instr->i_lineno)
             c->u->u_firstlineno = entryblock->b_instr->i_lineno;
        else
             c->u->u_firstlineno = 1;