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      1 // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s| FileCheck %s
      2 
      3 // rdar://9122143
      4 // CHECK: declare void @func(i64, double)
      5 typedef struct _str {
      6   union {
      7     long double a;
      8     long c;
      9   };
     10 } str;
     11 
     12 void func(str s);
     13 str ss;
     14 void f9122143()
     15 {
     16   func(ss);
     17 }
     18