Compiler version and platform:
Intel(R) C Intel(R) 64 Compiler for applications running on Intel(R) 64, Version 17.0.1.132 Build 20161005
$ icc -O1 -c small.c
$
$ icc -Os -c small.c": internal error: 0_76
compilation aborted for small.c (code 4)
$
$ cat small.c
int a, b;
void fn1 ()
{
int c[4] = { 3 };
for (; b; b++)
{
int i;
c[a] = b ^ i;
}
}
$