✅ added a regression test for #380 / #390

README.md

@@ -583,6 +583,7 @@ I deeply appreciate the help of the following people.
 - [TurpentineDistillery](https://github.com/TurpentineDistillery) pointed to [`std::locale::classic()`](http://en.cppreference.com/w/cpp/locale/locale/classic) to avoid too much locale joggling, found some nice performance improvements in the parser and improved the benchmarking code.
 - [cgzones](https://github.com/cgzones) had an idea how to fix the Coverity scan.
 - [Jared Grubb](https://github.com/jaredgrubb) silenced a nasty documentation warning.
+- [Yixin Zhang](https://github.com/qwename) fixed an integer overflow check.
 
 Thanks a lot for helping out!
 

test/src/unit-regression.cpp

@@ -533,4 +533,11 @@ TEST_CASE("regression tests")
         json j3 = json::parse("-9223372036854775809");
         CHECK(j3.is_number_float());
     }
+
+    SECTION("issue #380 - bug in overflow detection when parsing integers")
+    {
+        json j = json::parse("166020696663385964490");
+        CHECK(j.is_number_float());
+        CHECK(j.dump() == "1.66020696663386e+20");
+    }
 }