From ece4a6f4a27f7bc45f1b1d4791c31f48ec102ce7 Mon Sep 17 00:00:00 2001
From: Gleb Belov <bobbi@turboprinz.de>
Date: Fri, 18 Aug 2023 13:55:30 +1000
Subject: [PATCH] std::fflush() #220

Need to flush console output for AMPL IDE and SW console
---
 include/mp/solver-app.h  | 1 +
 include/mp/solver-base.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/include/mp/solver-app.h b/include/mp/solver-app.h
index 8d6359399..f7d65e5b0 100644
--- a/include/mp/solver-app.h
+++ b/include/mp/solver-app.h
@@ -41,6 +41,7 @@ class SolverApp : private Reader {
     void HandleOutput(fmt::CStringRef output) {
       has_output = true;
       std::fputs(output.c_str(), stdout);
+      std::fflush(stdout);         // #220
     }
   };
   AppOutputHandler output_handler_;
diff --git a/include/mp/solver-base.h b/include/mp/solver-base.h
index 3093408c2..dc7a60b8e 100644
--- a/include/mp/solver-base.h
+++ b/include/mp/solver-base.h
@@ -26,6 +26,7 @@ class OutputHandler {
   virtual void HandleOutput(fmt::CStringRef output) {
     has_output = true;
     std::fputs(output.c_str(), stdout);
+    std::fflush(stdout);       // #220
   }
 };
 
@@ -284,6 +285,7 @@ class BasicSolver : private ErrorHandler,
   /// Override methods from base service classes
   void HandleOutput(fmt::CStringRef output) override {
     std::fputs(output.c_str(), stdout);
+    std::fflush(stdout);         // #220
   }
 
   /// Handle error