meta.parameter scope leaks

[alexr00]

Checklist

• This problem exists even with the setting "C_Cpp.enhancedColorization": "Disabled"

The code with a problem is:

#include <vector>

std::vector<uint64_t> test(1 << 22);

int main() {
  for (int i = 0; i < (1 << 22); i++) {
    test[i] = i;
  }
  while (true) {
    switch (test[0] % 4) {
      case 0:
        test[0] = test[0] * 0x5deece66d + 0xb;
        break;
      case 1:
        test[0] = test[0] * 0x5deece66d + 0xb;
        break;
      case 2:
        test[0] = test[0] * 0x5deece66d + 0xb;
        break;
      case 3:
        test[0] = test[0] * 0x5deece66d + 0xb;
        break;
    }
  }
  return 0;
}

It looks like:

It looks like meta.parameter.cpp is leaking out of the line std::vector<uint64_t> test(1 << 22);

Originally from @clysto in microsoft/vscode#207184

[jeff-hykin]

@clysto I pushed a fix for this specific case, but stuff like

constexpr int a = 5;
std::vector<uint64_t> test(a << 22);

Is still broken because a full/generic fix is going to be tough. Not only does it involve the classic turbofish problem (which is sometimes totally unsolvable), but it also involves function-definition-vs-function-call which for Textmate, is always very hard, and sometimes unsolvable.