Stupid me. One day, I'll be able to compute array indices right

[simgrid.git] / src / xbt / xbt_str.c

diff --git a/src/xbt/xbt_str.c b/src/xbt/xbt_str.c
index ab09f43..9b4f244 100644 (file)
--- a/src/xbt/xbt_str.c
+++ b/src/xbt/xbt_str.c
@@ -371,20 +371,20 @@ static void diff_build_diff(xbt_dynar_t res,
     diff_build_diff(res,C,da,db,i-1,j-1);
     topush = bprintf("  %s",xbt_dynar_get_as(da,i,char*));
     xbt_dynar_push(res, &topush);
-  } else if (j>=0 && 
+  } else if (j>0 && 
             (i<=0 || xbt_matrix_get_as(C,i,j-1,int) >= xbt_matrix_get_as(C,i-1,j,int))) {
     diff_build_diff(res,C,da,db,i,j-1);
     topush = bprintf("+ %s",xbt_dynar_get_as(db,j,char*));
     xbt_dynar_push(res,&topush);
-  } else if (i>=0 && 
-            (j<0 || xbt_matrix_get_as(C,i,j-1,int) < xbt_matrix_get_as(C,i-1,j,int))) {
+  } else if (i>0 && 
+            (j<=0 || xbt_matrix_get_as(C,i,j-1,int) < xbt_matrix_get_as(C,i-1,j,int))) {
     diff_build_diff(res,C,da,db,i-1,j);
     topush = bprintf("- %s",xbt_dynar_get_as(da,i,char*));
     xbt_dynar_push(res,&topush);        
-  } else if (i<0 && j<0) {
+  } else if (i<=0 && j<=0) {
     return;
   } else {
-    THROW_IMPOSSIBLE;
+    THROW2(arg_error,0,"Invalid values: i=%d, j=%d",i,j);
   }
 }