diff options
| -rw-r--r-- | lib/Sema/SemaExpr.cpp | 5 | ||||
| -rw-r--r-- | test/SemaCXX/address-of-register-var.cpp | 9 |
2 files changed, 13 insertions, 1 deletions
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp index bd76b9ff12..6acef58f2c 100644 --- a/lib/Sema/SemaExpr.cpp +++ b/lib/Sema/SemaExpr.cpp @@ -6278,7 +6278,10 @@ QualType Sema::CheckAddressOfOperand(Expr *op, SourceLocation OpLoc) { // 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(); diff --git a/test/SemaCXX/address-of-register-var.cpp b/test/SemaCXX/address-of-register-var.cpp new file mode 100644 index 0000000000..5d391c5a35 --- /dev/null +++ b/test/SemaCXX/address-of-register-var.cpp @@ -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); +} + |