Finished checking --- 1 code warning, as expected
+internal.c: (in function f1)
+internal.c:21:9: Variable e1 shadows outer declaration
+ internal.c:12:7: Previous definition of e1: int
+
+Finished checking --- 1 code warning, as expected
+
internal.c:4:5: Internal identifier iwonderhowmanycharactersaresignificant2 is
not distinguishable from iwonderhowmanycharactersaresignificant1 in the
first 31 characters (iwonderhowmanycharactersaresign)