Fix uninitialized memory read reported by Valgrind when running doctest.

neal.norwitz · neal.norwitz · commit 04d042f0095a · 2006-07-12T05:27:46.000Z
This could happen if size == 0. git-svn-id: http://svn.python.org/projects/python/trunk@50599 6015fed2-1504-0410-9fe1-9d1591cc4771
diff --git a/Objects/codeobject.c b/Objects/codeobject.c
@@ -556,6 +556,7 @@ PyCode_CheckLineNumber(PyCodeObject* co, int lasti, PyAddrPair *bounds)
            the line increments here, treating them as byte
            increments gets confusing, to say the least. */
 
+        bounds->ap_lower = 0;
         while (size > 0) {
                 if (addr + *p > lasti)
                         break;
