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db77c4ae13
GCC applies a pragma weak to a decl if it matches the mangled name. We used to apply if it matched the plain name. This patch is a compromise: we apply the pragma only if it matches the name and the decl has C language linkage. llvm-svn: 176110
32 lines
807 B
C++
32 lines
807 B
C++
// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
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#pragma weak zex
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int zex;
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// GCC produces a weak symbol for this because it matches mangled names.
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// Different c++ ABIs may or may not mangle this, so we produce a strong
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// symbol.
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// CHECK: @zex = global i32
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#pragma weak foo
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struct S { void foo(); };
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void S::foo() {}
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// CHECK: define void @_ZN1S3fooEv(
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#pragma weak zed
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namespace bar { void zed() {} }
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// CHECK: define void @_ZN3bar3zedEv(
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#pragma weak bah
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void bah() {}
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// CHECK: define void @_Z3bahv(
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#pragma weak baz
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extern "C" void baz() {}
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// CHECK: define weak void @baz(
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#pragma weak _Z3baxv
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void bax() {}
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// GCC produces a weak symbol for this one, but it doesn't look like a good
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// idea to expose the mangling to the pragma unless we really have to.
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// CHECK: define void @_Z3baxv(
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