error: no matching conversion for functional-style cast from 'std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> >::rep' (aka 'long long') to 'xgboost::Integer' (aka 'xgboost::JsonInteger')

[yurivict]

/usr/ports/misc/xgboost/work/xgboost-0.90-235-gad4a1c73/src/common/timer.cc:47:25: error: no matching conversion for functional-style cast from 'std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> >::rep' (aka 'long long') to 'xgboost::Integer' (aka 'xgboost::JsonInteger')
    j_pair["elapsed"] = Integer(std::chrono::duration_cast<std::chrono::microseconds>(
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/ports/misc/xgboost/work/xgboost-0.90-235-gad4a1c73/include/xgboost/json.h:189:7: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> >::rep' (aka 'long long') to 'const xgboost::JsonInteger' for 1st argument
class JsonInteger : public Value {
      ^
/usr/ports/misc/xgboost/work/xgboost-0.90-235-gad4a1c73/include/xgboost/json.h:189:7: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'std::__1::chrono::duration<long long, std::__1::ratio<1, 1000000> >::rep' (aka 'long long') to 'xgboost::JsonInteger' for 1st argument
/usr/ports/misc/xgboost/work/xgboost-0.90-235-gad4a1c73/include/xgboost/json.h:200:3: note: candidate template ignored: requirement 'std::is_same<long long, long>::value' was not satisfied [with IntT = long long]
  JsonInteger(IntT value) : Value(ValueKind::Integer), integer_{value} {} // NOLINT
  ^

clang-8 on FreeBSD

[hcho3]

Thanks for your report. We generally aim to make XGBoost POSIX-compliant, but currently our testing infrastructure uses Linux exclusively.

[trivialfis]

@yurivict Would you like to open a PR as you have better testing environment for BSD? A simple static_cast should get it working.

[yurivict]

I just patches the port:

--- src/common/timer.cc.orig    2019-12-14 20:35:26 UTC
+++ src/common/timer.cc
@@ -44,8 +44,9 @@ std::vector<Monitor::StatMap> Monitor::CollectFromOthe
     statistic[kv.first] = Object();
     auto& j_pair = statistic[kv.first];
     j_pair["count"] = Integer(kv.second.count);  
-    j_pair["elapsed"] = Integer(std::chrono::duration_cast<std::chrono::microseconds>(
-        kv.second.timer.elapsed).count());
+    // https://github.com/dmlc/xgboost/issues/5117
+    j_pair["elapsed"] = 1; //Integer(std::chrono::duration_cast<std::chrono::microseconds>(
+        //kv.second.timer.elapsed).count());
   }
  
   std::stringstream ss;

I wouldn't have time for this any time soon.

[hcho3]

@yurivict dmlc/rabit#133 and #5233 should fix the build on FreeBSD.