handle illegal mathops in processMathop; valid for <64 bits in some cases

1 files changed, 8 insertions, 1 deletions

diff --git a/src/parseTools.js b/src/parseTools.js
index 45046558..090d85ac 100644
--- a/src/parseTools.js
+++ b/src/parseTools.js
@@ -2038,12 +2038,19 @@ function processMathop(item) {
   }
   var bitsBefore = parseInt((item.params[0] ? item.params[0].type : item.type).substr(1)); // remove i to leave the number of bits left after this
   var bitsLeft = parseInt(((item.params[1] && item.params[1].ident) ? item.params[1].ident : item.type).substr(1)); // remove i to leave the number of bits left after this operation
+  var rawBits = getBits(item.type);
+  assert(rawBits <= 64);
 
   function integerizeBignum(value) {
     return makeInlineCalculation('VALUE-VALUE%1', value, 'tempBigIntI');
   }
 
-  if ((type == 'i64' || paramTypes[0] == 'i64' || paramTypes[1] == 'i64' || idents[1] == '(i64)') && USE_TYPED_ARRAYS == 2) {
+  if ((type == 'i64' || paramTypes[0] == 'i64' || paramTypes[1] == 'i64' || idents[1] == '(i64)' || rawBits > 32) && USE_TYPED_ARRAYS == 2) {
+    // this code assumes i64 for the most part
+    if (ASSERTIONS && rawBits < 64) {
+      warnOnce('processMathop processing illegal non-i64 value: ' + [type, paramTypes, idents])
+    }
+
     var warnI64_1 = function() {
       warnOnce('Arithmetic on 64-bit integers in mode 1 is rounded and flaky, like mode 0!');
     };