3.4 if/while bug

test/simple_source/looping/12_if_while_bug.py

@@ -0,0 +1,17 @@
+# From  genericpath
+# Problem on Python 3.4
+# end of if can come from both finishing loop
+# and not taking the if.
+
+# whilestmt ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK \e__come_from
+# _ifstmts_jump ::= c_stmts_opt JUMP_FORWARD \e__come_from
+# ifstmt ::= testexpr _ifstmts_jump
+# _come_from ::= _come_from COME_FROM
+# _ifstmts_jump ::= c_stmts_opt JUMP_FORWARD _come_from
+
+def splitext(p, sep, altsep, extsep):
+    if altsep > extsep:
+        while sep < altsep:
+            sep += 1
+
+    return p