2 /* { dg-do compile } */
3 /* { dg-options "-Wall" } */
10 r
+= b
++; /* { dg-warning "increment of a boolean expression" } */
11 r
+= ++b
; /* { dg-warning "increment of a boolean expression" } */
12 r
+= b
--; /* { dg-warning "decrement of a boolean expression" } */
13 r
+= --b
; /* { dg-warning "decrement of a boolean expression" } */