Emscripten producing invalid JS when unary operator is applied to static const instance property.

main.cpp

#include <cstdio>

class UnaryTest {
public:
  static const UnaryTest STATIC_TEST;

  double p;

  UnaryTest(double p);
};

const UnaryTest UnaryTest::STATIC_TEST(-1);

UnaryTest::UnaryTest(double inP) : p(inP) { }

int main(int, char**){
  double t = -UnaryTest::STATIC_TEST.p;
  printf("%f\n", t);
  return 0;
}

main.js

function _main($0,$1) {
 $0 = $0|0;
 $1 = $1|0;
 var $2 = 0, $3 = 0, $4 = 0, $5 = 0.0, $6 = 0.0, $7 = 0.0, $vararg_buffer = 0, label = 0, sp = 0;
 sp = STACKTOP;
 STACKTOP = STACKTOP + 32|0; if ((STACKTOP|0) >= (STACK_MAX|0)) abortStackOverflow(32|0);
 $vararg_buffer = sp + 8|0;
 $2 = 0;
 $3 = $0;
 $4 = $1;
 $6 = --1.0;
 $5 = $6;
 $7 = $5;
 HEAPF64[$vararg_buffer>>3] = $7;
 (_printf(384,$vararg_buffer)|0);
 STACKTOP = sp;return 0;
}