[llvm-bugs] [Bug 28496] New: clang crashes on likely invalid C++11 code: Assertion `hasInClassInitializer() && InitStorage.getPointer() == nullptr && "bit width, initializer or captured type already set"' failed

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28496

            Bug ID: 28496
           Summary: clang crashes on likely invalid C++11 code: Assertion
                    `hasInClassInitializer() && InitStorage.getPointer()
                    == nullptr && "bit width, initializer or captured type
                    already set"' failed
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++11
          Assignee: unassignedclangbugs at nondot.org
          Reporter: su at cs.ucdavis.edu
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

The current clang trunk crashes when compiling the following C++11 test case on
x86_64-linux-gnu in both 32-bit and 64-bit modes. 

It also crashes 3.6.x and later and is rejected by 3.5.x and earlier. 

It is 
- rejected by GCC 6.x and later (5.x ICEs) 
- accepted by GCC 4.8.x and 4.9.x 
- accepted by MSVC 19.00.23720.0 (x86) 
- rejected by ICC 13.0.1 (data member initializer unsupported) 

Crash log is too large and thus omitted. 


$ clang++ -v
clang version 3.9.0 (trunk 275012)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.1.1
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ 


-----------------------------------------------


template < class T > struct A
{
  int t = [] (A *) { return 0; } (new A);
};

int main ()
{
  A < int > a; 
  a.t;
  return 0; 
}

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