llvm-project/llvm/test/FrontendC/2003-11-01-C99-CompoundLiteral.c

// RUN: %llvmgcc -S %s -o - | llvm-as -o /dev/null

typedef struct { int foo; } spinlock_t;
typedef struct wait_queue_head_t { spinlock_t lock; } wait_queue_head_t;
void call_usermodehelper(void) { 
  struct wait_queue_head_t work = { lock: (spinlock_t) { 0 }, }; 
}