--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/pr86489.c Thu Oct 25 07:37:49 2018 +0900 @@ -0,0 +1,12 @@ + +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +int a = 0, b = 0; +void fn1() { + int c = 0; + for (; a; a--) + c += b; + while ((c - 1) & c) + ; +}