acf9aa3c22
Unlike ELF targets, MachO does not support the same kind of dynamic symbol resolution at load time. Instead, the corresponding MachO feature resolves symbols lazily on first call. Reviewers: JDevlieghere, dmpolukhin, ahmedbougacha, tahonermann, echristo, MaskRay, erichkeane Reviewed By: MaskRay, echristo, ahmedbougacha Pull Request: https://github.com/llvm/llvm-project/pull/73687
27 lines
1.5 KiB
C++
27 lines
1.5 KiB
C++
// RUN: %clang_cc1 -emit-llvm-only -triple x86_64-linux-gnu -verify %s
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// RUN: %clang_cc1 -emit-llvm-only -triple x86_64-apple-macosx -verify %s
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// RUN: %clang_cc1 -emit-llvm-only -triple arm64-apple-macosx -verify %s
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// RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
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// RUN: not %clang_cc1 -triple x86_64-apple-macosx -emit-llvm-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
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// RUN: not %clang_cc1 -triple arm64-apple-macosx -emit-llvm-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
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extern "C" {
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__attribute__((used)) static void *resolve_foo() { return 0; }
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namespace NS {
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__attribute__((used)) static void *resolve_foo() { return 0; }
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} // namespace NS
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// FIXME: This diagnostic is pretty confusing, the issue is that the existence
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// of the two functions suppresses the 'alias' creation, and thus the ifunc
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// resolution via the alias as well. In the future we should probably find
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// some way to improve this diagnostic (likely by diagnosing when we decide
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// this case suppresses alias creation).
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__attribute__((ifunc("resolve_foo"))) void foo(); // expected-error{{ifunc must point to a defined function}}
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// expected-note@-1 {{must refer to its mangled name}}
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// expected-note@-2 {{function by that name is mangled as}}
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// expected-note@-3 {{function by that name is mangled as}}
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// CHECK: fix-it:"{{.*}}":{[[@LINE-4]]:16-[[@LINE-4]]:36}:"ifunc(\"_ZL11resolve_foov\")"
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// CHECK: fix-it:"{{.*}}":{[[@LINE-5]]:16-[[@LINE-5]]:36}:"ifunc(\"_ZN2NSL11resolve_fooEv\")"
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}
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