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477f9cea77
MSVC allows instantiations of exported or imported template classes with template parameters that have internal linkage. Clang now allows it in Microsoft mode and for the Playstation platform. This partially addresses issue 56068. Note that MSVC also allows explicit dllexport/dllimport attributes on classes with internal linkage (e.g. local classes or classes declared in anonymous name spaces). Clang continues to reject such declarations. Reviewed By: hans Differential Revision: https://reviews.llvm.org/D146338
35 lines
1.5 KiB
C++
35 lines
1.5 KiB
C++
// RUN: %clang_cc1 -no-enable-noundef-analysis -triple i686-windows-msvc -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -disable-llvm-passes -o - %s | FileCheck --check-prefix=MSC %s
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// RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-scei-ps4 -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s | FileCheck --check-prefix=PS %s
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// RUN: %clang_cc1 -no-enable-noundef-analysis -triple x86_64-sie-ps5 -emit-llvm -std=c++1y -fno-threadsafe-statics -fms-extensions -O0 -o - %s | FileCheck --check-prefix=PS %s
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template <typename T> struct __declspec(dllexport) ExportedClassTemplate { void func(); };
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// Make sure that we do not export classes with unique external linkage.
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// Note that MSVC does indeed export the symbols in the MSC check string.
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void func1() {
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class LocalCRTP : public ExportedClassTemplate<LocalCRTP> {};
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LocalCRTP lc;
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lc.func();
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}
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namespace {
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class AnonNSCRTP : public ExportedClassTemplate<AnonNSCRTP> {};
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AnonNSCRTP ac;
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}
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void func2() {
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ac.func();
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}
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// MSC-NOT: declare {{.*}}dllexport
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// MSC: call {{.*}}@"?func@?$ExportedClassTemplate@VLocalCRTP@?1??func1@@{{.*}}"
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// MSC-NOT: declare {{.*}}dllexport
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// MSC: call {{.*}}@"?func@?$ExportedClassTemplate@VAnonNSCRTP@?{{.*}}"
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// MSC-NOT: declare {{.*}}dllexport
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// PS-NOT: declare {{.*}}dllexport
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// PS: call {{.*}}@_ZN21ExportedClassTemplateIZ5func1vE9LocalCRTPE4funcEv
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// PS-NOT: declare {{.*}}dllexport
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// PS: call {{.*}}@_ZN21ExportedClassTemplateIN12_GLOBAL__N_110AnonNSCRTPEE4funcEv
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// PS-NOT: declare {{.*}}dllexport
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