[LLVMbugs] [Bug 18125] New: Repetition of template name of conversion operator in backtrace

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Dec 3 09:27:44 PST 2013


            Bug ID: 18125
           Summary: Repetition of template name of conversion operator in
           Product: clang
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: jonathan.sauer at gmx.de
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

The following (incorrect) code results in a slightly confusing template
backtrace when being compiled with clang r196094:

struct Foo {
    template <typename T>
    operator T() const

template <typename T>
struct Vector {};

int main()
    Vector<float>   v = Foo();

This results in:

% ~/LLVM/build/Release+Asserts/bin/clang++ -c clang.cppclang.cpp:5:12: error:
no member named 'bar' in 'Vector<float>'
clang.cpp:14:25: note: in instantiation of function template specialization
'Foo::operator Vector<Vector<float> >'
      requested here
    Vector<float>   v = Foo();
1 error generated.

For some reason, in the note/backtrace the operator is not called
'Foo::operator Vector<float>', but 'Foo::operator Vector<Vector<float> >', with
'Vector' being repeated.

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