[llvm-bugs] [Bug 32991] New: const variables defined with __delspec(dll export)
via llvm-bugs
llvm-bugs at lists.llvm.org
Wed May 10 09:41:57 PDT 2017
https://bugs.llvm.org/show_bug.cgi?id=32991
Bug ID: 32991
Summary: const variables defined with __delspec(dll export)
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: C++
Assignee: unassignedclangbugs at nondot.org
Reporter: zahira.ammarguellat at intel.com
CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
In Microsoft C++ mode with microsoft_version >= 1400, const variables defined
in namespace scope, have external linkage by default if the variable was
declared with __declspec(dllexport).
ksh-3.2$ cat test.cpp
__declspec(dllexport) int const x = 3;
ksh-3.2$ cl -c test.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24215.1 for x64
Copyright (C) Microsoft Corporation. All rights reserved.
test.cpp
ksh-3.2$ clang -v
clang version 5.0.0 (cfe/trunk 302180)
Target: x86_64-pc-windows-msvc
Thread model: posix
ksh-3.2$ clang -c test.cpp
test.cpp:1:33: error: 'x' must have external linkage when declared 'dllexport'
__declspec(dllexport) int const x = 3;
^
1 error generated.
ksh-3.2$
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