llvm/clang/test/CodeGenCXX/2010-06-22-ZeroBitfield.cpp

// RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited %s -o -
struct s8_0 { unsigned : 0; };
struct s8_1 { double x; };
struct s8 { s8_0 a; s8_1 b; };
s8 f8() { return s8(); }