fix error in twoxtwo preprocess

jjhforrest · jjhforrest · commit 92c7e0cba837 · 2025-08-12T19:33:11.000+01:00
diff --git a/src/CoinPresolveDupcol.cpp b/src/CoinPresolveDupcol.cpp
@@ -2739,14 +2739,14 @@ const CoinPresolveAction
       }
     }
   }
-  // adjust offset
-  if (offset)
-    prob->change_bias(offset);
   if (nactions) {
 #if PRESOLVE_SUMMARY
     printf("Cost offset %g - from %d blocks\n", offset, nactions);
     printf("TWO by TWO blocks:  %d - offset %g\n", nactions, offset);
 #endif
+    // adjust offset
+    if (offset)
+      prob->change_bias(offset);
     action *actions = new action[nactions];
     memcpy(actions, boundRecords, nactions * sizeof(action));
     next = new twoxtwo_action(nactions, actions, next);

Original file line number	Diff line number	Diff line change
`@@ -2739,14 +2739,14 @@ const CoinPresolveAction`
`2739`	`2739`	`}`
`2740`	`2740`	`}`
`2741`	`2741`	`}`
`2742`		`- // adjust offset`
`2743`		`- if (offset)`
`2744`		`- prob->change_bias(offset);`
`2745`	`2742`	`if (nactions) {`
`2746`	`2743`	`#if PRESOLVE_SUMMARY`
`2747`	`2744`	`printf("Cost offset %g - from %d blocks\n", offset, nactions);`
`2748`	`2745`	`printf("TWO by TWO blocks: %d - offset %g\n", nactions, offset);`
`2749`	`2746`	`#endif`
	`2747`	`+ // adjust offset`
	`2748`	`+ if (offset)`
	`2749`	`+ prob->change_bias(offset);`
`2750`	`2750`	`action *actions = new action[nactions];`
`2751`	`2751`	`memcpy(actions, boundRecords, nactions * sizeof(action));`
`2752`	`2752`	`next = new twoxtwo_action(nactions, actions, next);`