clang/test/CodeGenCXX/pragma-weak.cpp

   1 // RUN: %clang_cc1 -triple %itanium_abi_triple -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 = {{(dso_local )?}}global i32
   9
  10 #pragma weak foo
  11 struct S {  void foo(); };
  12 void S::foo() {}
  13 // CHECK-LABEL: define {{.*}}void @_ZN1S3fooEv(
  14
  15 #pragma weak zed
  16 namespace bar {  void zed() {} }
  17 // CHECK-LABEL: define {{.*}}void @_ZN3bar3zedEv(
  18
  19 #pragma weak bah
  20 void bah() {}
  21 // CHECK-LABEL: define {{.*}}void @_Z3bahv(
  22
  23 #pragma weak baz
  24 extern "C" void baz() {}
  25 // CHECK-LABEL: 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-LABEL: define {{.*}}void @_Z3baxv(