fix corner case in evaluate & unsafe_math (#3756)

fixes #3755
2020-03-30 12:13:14 +01:00
parent c69c026728
commit dc0cd088cf
2 changed files with 17 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3243,6 +3243,7 @@ merge(Compressor.prototype, {
            }
            if (isNaN(result)) return compressor.find_parent(AST_With) ? this : result;
            if (compressor.option("unsafe_math")
+                && !ignore_side_effects
                && result
                && typeof result == "number"
                && (this.operator == "+" || this.operator == "-")) {