hopefully fixed test failure on Linux

modules/imgproc/src/morph.cpp

@@ -1221,7 +1221,7 @@ static bool IPPMorphReplicate(int op, const Mat &src, Mat &dst, const Mat &kerne
         IPP_MORPH_CASE(CV_32FC3, 32f_C3R, 32f);
         IPP_MORPH_CASE(CV_32FC4, 32f_C4R, 32f);
         default:
-            return false;
+            ;
         }
 
         #undef IPP_MORPH_CASE
@@ -1253,14 +1253,11 @@ static bool IPPMorphReplicate(int op, const Mat &src, Mat &dst, const Mat &kerne
         IPP_MORPH_CASE(CV_32FC3, 32f_C3R, 32f);
         IPP_MORPH_CASE(CV_32FC4, 32f_C4R, 32f);
         default:
-            return false;
+            ;
         }
         #undef IPP_MORPH_CASE
-
-#if defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ >= 8
-        return false; /// It disables false positive warning in GCC 4.8 and further
-#endif
     }
+    return false;
 }
 
 static bool IPPMorphOp(int op, InputArray _src, OutputArray _dst,

modules/ml/src/boost.cpp

@@ -220,7 +220,6 @@ public:
 
     void updateWeightsAndTrim( int treeidx, vector<int>& sidx )
     {
-        putchar('<');
         int i, n = (int)w->sidx.size();
         int nvars = (int)varIdx.size();
         double sumw = 0., C = 1.;
@@ -374,7 +373,6 @@ public:
             if( w->sample_weights[si] >= threshold )
                 sidx.push_back(si);
         }
-        putchar('>'); fflush(stdout);
     }
 
     float predictTrees( const Range& range, const Mat& sample, int flags0 ) const

modules/ml/src/tree.cpp

@@ -340,26 +340,6 @@ int DTreesImpl::addTree(const vector<int>& sidx )
                 break;
 
             w_nidx = w->wnodes[w_pidx].right;
-#if 1
-            if( w_nidx < 0 )
-            {
-                size_t i, nnodes = w->wnodes.size();
-                printf("w_pidx = %d\nwnodes (%d): ", w_pidx, (int)n);
-                for( i = 0; i < nnodes; i++ )
-                {
-                    printf("[%d. depth=%d parent=%d, left=%d, right=%d] ",
-                           (int)i, w->wnodes[i].depth, w->wnodes[i].parent, w->wnodes[i].left, w->wnodes[i].right);
-                }
-
-                nnodes = nodes.size();
-                printf("\nnodes (%d): ", (int)nnodes);
-                for( i = 0; i < nnodes; i++ )
-                {
-                    printf("[%d. parent=%d, left=%d, right=%d] ", (int)i, nodes[i].parent, nodes[i].left, nodes[i].right);
-                }
-                printf("\n");
-            }
-#endif
             CV_Assert( w_nidx >= 0 );
         }
     }
@@ -450,8 +430,10 @@ int DTreesImpl::addNodeAndTrySplit( int parent, const vector<int>& sidx )
         if( params.useSurrogates )
             CV_Error( CV_StsNotImplemented, "surrogate splits are not implemented yet");
 
-        w->wnodes[nidx].left = addNodeAndTrySplit( nidx, sleft );
-        w->wnodes[nidx].right = addNodeAndTrySplit( nidx, sright );
+        int left = addNodeAndTrySplit( nidx, sleft );
+        int right = addNodeAndTrySplit( nidx, sright );
+        w->wnodes[nidx].left = left;
+        w->wnodes[nidx].right = right;
         CV_Assert( w->wnodes[nidx].left > 0 && w->wnodes[nidx].right > 0 );
     }