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      1 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
      2 
      3 #pragma weak zex
      4 int zex;
      5 // GCC produces a weak symbol for this because it matches mangled names.
      6 // Different c++ ABIs may or may not mangle this, so we produce a strong
      7 // symbol.
      8 // CHECK: @zex = global i32
      9 
     10 #pragma weak foo
     11 struct S {  void foo(); };
     12 void S::foo() {}
     13 // CHECK: define void @_ZN1S3fooEv(
     14 
     15 #pragma weak zed
     16 namespace bar {  void zed() {} }
     17 // CHECK: define void @_ZN3bar3zedEv(
     18 
     19 #pragma weak bah
     20 void bah() {}
     21 // CHECK: define void @_Z3bahv(
     22 
     23 #pragma weak baz
     24 extern "C" void baz() {}
     25 // CHECK: define weak void @baz(
     26 
     27 #pragma weak _Z3baxv
     28 void bax() {}
     29 // GCC produces a weak symbol for this one, but it doesn't look like a good
     30 // idea to expose the mangling to the pragma unless we really have to.
     31 // CHECK: define void @_Z3baxv(
     32