[cfe-commits] r111977 - in /cfe/trunk: lib/Sema/SemaExpr.cpp test/SemaCXX/address-of-register-var.cpp

[Fariborz Jahanian]

Author: fjahanian
Date: Tue Aug 24 17:21:48 2010
New Revision: 111977

URL: http://llvm.org/viewvc/llvm-project?rev=111977&view=rev
Log:
It is not error in c++ to take address of
register variable (c++03 7.1.1P3). radar 8108252.

Added:
    cfe/trunk/test/SemaCXX/address-of-register-var.cpp
Modified:
    cfe/trunk/lib/Sema/SemaExpr.cpp

Modified: cfe/trunk/lib/Sema/SemaExpr.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaExpr.cpp?rev=111977&r1=111976&r2=111977&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaExpr.cpp (original)
+++ cfe/trunk/lib/Sema/SemaExpr.cpp Tue Aug 24 17:21:48 2010
@@ -6278,7 +6278,10 @@
     // We have an lvalue with a decl. Make sure the decl is not declared
     // with the register storage-class specifier.
     if (const VarDecl *vd = dyn_cast<VarDecl>(dcl)) {
-      if (vd->getStorageClass() == VarDecl::Register) {
+      // in C++ it is not error to take address of a register
+      // variable (c++03 7.1.1P3)
+      if (vd->getStorageClass() == VarDecl::Register &&
+          !getLangOptions().CPlusPlus) {
         Diag(OpLoc, diag::err_typecheck_address_of)
           << "register variable" << op->getSourceRange();
         return QualType();

Added: cfe/trunk/test/SemaCXX/address-of-register-var.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaCXX/address-of-register-var.cpp?rev=111977&view=auto
==============================================================================
--- cfe/trunk/test/SemaCXX/address-of-register-var.cpp (added)
+++ cfe/trunk/test/SemaCXX/address-of-register-var.cpp Tue Aug 24 17:21:48 2010
@@ -0,0 +1,9 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+// rdar // 8018252
+
+void f0() {
+  extern void f0_1(int*);
+  register int x;
+  f0_1(&x);
+}
+