[llvm-bugs] [Bug 27122] New: Assertion `InitE && "No initialization expression?"' failed.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27122

            Bug ID: 27122
           Summary: Assertion `InitE && "No initialization expression?"'
                    failed.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rtrieu at google.com
                CC: Kaelyn.Alexi at gmail.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

$ cat test.cpp
namespace ns {

void Function(int format) { }
void Function(int format, int a) { }

void Function(const int num)
  __attribute__((enable_if(num != 0, "Check num0"), unavailable("Bad num 0")));
void Function(const int num, const int a0)
  __attribute__((enable_if(num != 1, "Check num1"), unavailable("Bad num 1")));

}  // namespace ns

using ns::Function;
void Run() {
  Functioon(0);
}
$ clang -fsyntax-only test.cpp
test.cpp:15:3: error: use of undeclared identifier 'Functioon'; did you mean
      'Function'?
  Functioon(0);
  ^~~~~~~~~
  Function
test.cpp:13:11: note: 'Function' declared here
using ns::Function;
          ^
test.cpp:15:3: error: 'Function' is unavailable: Bad num 1
  Functioon(0);
  ^
test.cpp:8:6: note: 'Function' has been explicitly marked unavailable here
void Function(const int num, const int a0)
     ^
clang-3.5: ../tools/clang/lib/Sema/SemaInit.cpp:7827: ExprResult
clang::Sema::PerformCopyInitialization(const clang::InitializedEntity &,
clang::SourceLocation, ExprResult, bool, bool): Assertion `InitE && "No
initialization expression?"' failed.

Functioon is typo-corrected to Function.  However, with the using declaration
and overloaded Function, the LookupResult typo-corrects to "void Function(const
int num, const int a0)" and causes the assertion failure.

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