[llvm-bugs] [Bug 28500] New: Assertion failed: isa<LabelDecl>(D) && "declaration not instantiated in this scope"

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28500

            Bug ID: 28500
           Summary: Assertion failed: isa<LabelDecl>(D) && "declaration
                    not instantiated in this scope"
           Product: clang
           Version: 3.8
          Hardware: Other
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jtony at ca.ibm.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Steps to reproduce on linux:
-bash-4.2$ cat r.cpp
template <class T> void bar(T t = [](decltype(t) i){return 0;}(0)) {}
void foo()
{
  bar<int>();
}
-bash-4.2$ pwd
/home/jtony/workitems/132592
-bash-4.2$ cat r.cpp
template <class T> void bar(T t = [](decltype(t) i){return 0;}(0)) {}
void foo()
{
  bar<int>();
}


bash-4.2$ myclang++ r.cpp  -std=c++11
clang:
/home/jtony/build/3_8/llvm-dev.src/tools/clang/lib/Sema/SemaTemplateInstantiate.cpp:2811:
llvm::PointerUnion<clang::Decl*, llvm::Smal
lVector<clang::ParmVarDecl*, 4u>*>*
clang::LocalInstantiationScope::findInstantiationOf(const clang::Decl*):
Assertion `isa<LabelDecl>(D) &&
 "declaration not instantiated in this scope"' failed.
0  clang     0x000000001568c4e4 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
+ 68
...
clang version 3.8.0 (tags/RELEASE_380/final)
Target: powerpc64le-unknown-linux-gnu
Thread model: posix


-bash-4.2$ type myclang
myclang is aliased to `/home/jtony/build/runnable/bin/clang'

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