[llvm-bugs] [Bug 35042] New: clang disagrees with {gcc, icc, msvc} about ambiguous name

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Oct 23 12:47:01 PDT 2017


            Bug ID: 35042
           Summary: clang disagrees with {gcc,icc,msvc} about ambiguous
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: chisophugis at gmail.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org

GCC and clang seem to disagree about whether the reference to `isa` in this
snippet is valid:

namespace myarch {
  namespace isa {

using namespace myarch;

namespace llvm {
  template <typename T>
  void isa() {}

using namespace llvm;

void f() {

Clang accepts this code. GCC says `error: reference to 'isa' is ambiguous`.


Also, ICC and MSVC seem to believe that it is ambiguous as well.

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