[PATCH] D33852: Enable __declspec(selectany) on linux

Piotr Padlewski via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Aug 29 19:17:15 PDT 2017


Prazek updated this revision to Diff 113189.
Prazek added a comment.

- Add documentation


https://reviews.llvm.org/D33852

Files:
  include/clang/Basic/Attr.td
  test/Sema/attr-selectany.c
  test/SemaCXX/attr-selectany.cpp


Index: test/SemaCXX/attr-selectany.cpp
===================================================================
--- test/SemaCXX/attr-selectany.cpp
+++ test/SemaCXX/attr-selectany.cpp
@@ -1,4 +1,7 @@
 // RUN: %clang_cc1 -triple x86_64-win32 -fms-compatibility -fms-extensions -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux -fms-compatibility -fms-extensions -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple x86_64-win32-macho -fms-compatibility -fms-extensions -fsyntax-only -verify -std=c++11 %s
+
 // MSVC produces similar diagnostics.
 
 __declspec(selectany) void foo() { } // expected-error{{'selectany' can only be applied to data items with external linkage}}
Index: test/Sema/attr-selectany.c
===================================================================
--- test/Sema/attr-selectany.c
+++ test/Sema/attr-selectany.c
@@ -1,5 +1,7 @@
 // RUN: %clang_cc1 -triple x86_64-win32 -fdeclspec -verify %s
 // RUN: %clang_cc1 -triple x86_64-mingw32 -verify %s
+// RUN: %clang_cc1 -triple x86_64-unknown-linux -verify -fdeclspec %s
+// RUN: %clang_cc1 -triple x86_64-win32-macho -verify -fdeclspec %s
 
 extern __declspec(selectany) const int x1 = 1; // no warning, const means we need extern in C++
 
Index: include/clang/Basic/Attr.td
===================================================================
--- include/clang/Basic/Attr.td
+++ include/clang/Basic/Attr.td
@@ -2472,9 +2472,10 @@
   let Documentation = [DLLImportDocs];
 }
 
-def SelectAny : InheritableAttr, TargetSpecificAttr<TargetWindows> {
+def SelectAny : InheritableAttr {
   let Spellings = [Declspec<"selectany">, GCC<"selectany">];
-  let Documentation = [Undocumented];
+  let Documentation = ["This makes global symbol have a weak definition,
+                        meaning that the linker can select any definition."];
 }
 
 def Thread : Attr {


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D33852.113189.patch
Type: text/x-patch
Size: 1873 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20170830/0b359c94/attachment.bin>


More information about the cfe-commits mailing list