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789a46f2d7
Summary: Clang -fpic defaults to -fno-semantic-interposition (GCC -fpic defaults to -fsemantic-interposition). Users need to specify -fsemantic-interposition to get semantic interposition behavior. Semantic interposition is currently a best-effort feature. There may still be some cases where it is not handled well. Reviewers: peter.smith, rnk, serge-sans-paille, sfertile, jfb, jdoerfert Subscribers: dschuff, jyknight, dylanmckay, nemanjai, jvesely, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, arphaman, PkmX, jocewei, jsji, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D73865
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// RUN: %clang_cc1 -triple x86_64-none-linux-gnu %s -emit-llvm -o - -fsemantic-interposition | FileCheck %s
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// RUN: %clang_cc1 -triple arm-apple-darwin %s -emit-llvm -o - | FileCheck %s
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// Simple key function test
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struct testa { virtual void a(); };
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void testa::a() {}
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// Simple key function test
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struct testb { virtual void a() {} };
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testb *testbvar = new testb;
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// Key function with out-of-line inline definition
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struct testc { virtual void a(); };
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inline void testc::a() {}
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// Functions with inline specifier are not key functions (PR5705)
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struct testd { inline virtual void a(); };
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void testd::a() {}
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// Functions with inline specifier are not key functions (PR5705)
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struct teste { inline virtual void a(); };
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teste *testevar = new teste;
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// Key functions with namespace (PR5711)
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namespace {
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struct testf { virtual void a(); };
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}
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void testf::a() {}
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// Key functions with namespace (PR5711)
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namespace {
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struct testg { virtual void a(); };
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}
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void testg::a() {}
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testg *testgvar = new testg;
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struct X0 { virtual ~X0(); };
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struct X1 : X0 {
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virtual void f();
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};
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inline void X1::f() { }
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void use_X1() { X1 x1; }
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// CHECK-DAG: @_ZTV2X1 = linkonce_odr unnamed_addr constant
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// CHECK-DAG: @_ZTV5testa = unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null
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// CHECK-DAG: @_ZTV5testc = linkonce_odr unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null
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// CHECK-DAG: @_ZTV5testb = linkonce_odr unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null
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// CHECK-DAG: @_ZTV5teste = linkonce_odr unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null
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// CHECK-DAG: @_ZTVN12_GLOBAL__N_15testgE = internal unnamed_addr constant { [3 x i8*] } { [3 x i8*] [i8* null
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