Possible Visual Studio 2015 C++ Compiler and IntelliSense Bugs -

i encountered compiler crash , intellisense false positives visual studio 2015 using c++.

this crashes compiler when written within function block:

if(); 

this dialog shown when compiling (i on german version of windows):

even though compiler crashes, error list output:

error c2059 syntax error: ')'
warning c4390 ';': empty controlled statement found; intent?
error c1903 unable recover previous error(s); stopping compilation

this produces squiggles , error annotations in vertical scrollbar in map mode, no actual intellisense errors:

#include <vector>  struct s { std::vector<s> children; };  int main(int argc, char* argv[]) {     s item;      item.children.push_back(s());     //           ^     // error: no instance of overloaded function      // "std::vector<_ty, _alloc>::push_back [with _ty=s, _alloc=std::allocator<s>]"      // matches argument list     // argument types are: (s)     // object type is: std::vector<s, std::allocator<s>>      s& = item.children.back();     //        ^^^^     // error: reference of type "s &" (not const-qualified) cannot     // initialized value of type "s"      return 0; } 

are bugs? known? can reproduce them?

for first case: compiler shouldn't crash issue diagnostic show. yes, that's bug. doesn't occur in vs2013 btw. submit report here

for second case: same in vs2013 , due nesting vector of s inside s. , other cases make error squiggles appear incorrectly, not uncommon. ideally should not happen can submit bug report well, though might going labelled 'wontfix' compiler team focusses on more urgent cases.