Add console flushing

runtime/src/main/cpp/Memory.cpp

@@ -1859,6 +1859,7 @@ void deinitMemory(MemoryState* memoryState) {
     konan::consoleErrorf(
         "Memory leaks detected, %d objects leaked!\n"
         "Use `Platform.isMemoryLeakCheckerActive = false` to avoid this check.\n", allocCount);
+    konan::consoleFlush();
     konan::abort();
   }
 #endif  // USE_GC

runtime/src/main/cpp/Porting.cpp

@@ -172,6 +172,11 @@ void consoleErrorf(const char* format, ...) {
   consoleErrorUtf8(buffer, rv);
 }
 
+void consoleFlush() {
+  ::fflush(stdout);
+  ::fflush(stderr);
+}
+
 // Thread execution.
 #if !KONAN_NO_THREADS
 

runtime/src/main/cpp/Porting.h

@@ -32,6 +32,7 @@ void consoleWriteUtf8(const void* utf8, uint32_t sizeBytes);
 void consoleErrorUtf8(const void* utf8, uint32_t sizeBytes);
 // Negative return value denotes that read wasn't successful.
 int32_t consoleReadUtf8(void* utf8, uint32_t maxSizeBytes);
+void consoleFlush();
 
 // Process control.
 RUNTIME_NORETURN void abort(void);

runtime/src/main/cpp/Worker.cpp

@@ -493,6 +493,7 @@ class State {
         "Unfinished workers detected, %lu workers leaked!\n"
         "Use `Platform.isMemoryLeakCheckerActive = false` to avoid this check.\n",
         remainingNativeWorkers);
+      konan::consoleFlush();
       konan::abort();
     }
   }