[LLVMbugs] [Bug 14124] New: Crash on instantiating a template within a pack expansion

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=14124

             Bug #: 14124
           Summary: Crash on instantiating a template within a pack
                    expansion
           Product: clang
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: jordan_rose at apple.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


The following code causes clang to hit an UNREACHABLE at CGExpr.cpp:1767. I
think it's valid, but at the very least it should not crash, right?

r166237

---

namespace {
  template <typename T>
  struct Format { int value = 1; };
} // end anonymous namespace

void test(int x, ...) {}

template <typename ...Args>
void makeRequest(Args... args) {
  test(Format<Args>::value...);
}

void test() {
  makeRequest(1);
}

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