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      1 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
      2 
      3 // CHECK: @test2_i = internal global i32 99
      4 static int test2_i = 99;
      5 int test2_f() {
      6   extern int test2_i;
      7   return test2_i;
      8 }
      9 
     10 // C99 6.2.2p3
     11 // PR3425
     12 static void f(int x);
     13 
     14 void g0() {
     15   f(5);
     16 }
     17 
     18 extern void f(int x) { } // still has internal linkage
     19 // CHECK: define internal void @f
     20