ref: ba0b2937f7725f03722c95bfb7772cba9e4ffb2f
dir: /tests/cc/error/0020-storage.c/
int a; static char b; extern int c; typedef unsigned e; int func1(void) { auto h; static char i; register long j; extern int k; static unsigned long a; return 0; } void func2(register int par) { int par; } static void func3(register int par) { } register short d; register void func4(static int par) { static register f; } short d; char d;