test/Sema/int-arith-convert.c

// RUN: clang -fsyntax-only -verify %s

// Check types are the same through redeclaration
unsigned long x;
__typeof(1u+1l) x;

unsigned y;
__typeof(1+1u) y;
__typeof(1u+1) y;

long long z;
__typeof(1ll+1u) z;