11a54c3465
The address of dllimport functions can be accessed one of two ways: - Through the IAT which is symbolically referred to with a symbol starting with __imp_. - Via the wrapper-function which ends up calling through the __imp_ symbol. The problem with using the wrapper-function is that it's address will not compare as equal in all translation units. Specifically, it will compare unequally with the translation unit which defines the function. This fixes PR19955. llvm-svn: 211570
28 lines
1.0 KiB
C++
28 lines
1.0 KiB
C++
// RUN: %clang_cc1 -triple i686-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -fno-rtti -emit-llvm -std=c++1y -O0 -o - %s | FileCheck %s --check-prefix X64
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extern int __declspec(dllimport) var;
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extern void __declspec(dllimport) fun();
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extern int *varp;
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int *varp = &var;
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// CHECK-DAG: @"\01?varp@@3PAHA" = global i32* null
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// X64-DAG: @"\01?varp@@3PEAHEA" = global i32* null
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extern void (*funp)();
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void (*funp)() = &fun;
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// CHECK-DAG: @"\01?funp@@3P6AXXZA" = global void ()* null
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// X64-DAG: @"\01?funp@@3P6AXXZEA" = global void ()* null
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// CHECK-LABEL: @"\01??__Evarp@@YAXXZ"
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// CHECK-DAG: store i32* @"\01?var@@3HA", i32** @"\01?varp@@3PAHA"
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// X64-LABEL: @"\01??__Evarp@@YAXXZ"
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// X64-DAG: store i32* @"\01?var@@3HA", i32** @"\01?varp@@3PEAHEA"
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// CHECK-LABEL: @"\01??__Efunp@@YAXXZ"()
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// CHECK-DAG: store void ()* @"\01?fun@@YAXXZ", void ()** @"\01?funp@@3P6AXXZA"
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// X64-LABEL: @"\01??__Efunp@@YAXXZ"()
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// X64-DAG: store void ()* @"\01?fun@@YAXXZ", void ()** @"\01?funp@@3P6AXXZEA"
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