IOSS: Fix some minor issues

packages/seacas/libraries/ioss/src/Ioss_Map.C

@@ -360,7 +360,7 @@ void Ioss::Map::set_default(size_t count, size_t offset)
   IOSS_FUNC_ENTER(m_);
   m_map.resize(count + 1);
   std::iota(m_map.begin() + 1, m_map.end(), 1 + offset);
-  m_offset = -1 * offset;
+  m_offset = -1 * int64_t(offset);
   set_is_sequential(true);
 }
 

packages/seacas/libraries/ioss/src/Ioss_Utils.h

@@ -49,7 +49,7 @@ namespace Ioss {
 // We have been relying on the assumption that calling `.data()` on an empty vector
 // will return `nullptr`.  However, according to cppreference (based on the standard):
 //
-// `If size() is ​0​, data() may or may not return a null pointer.`
+// `If size() is 0, data() may or may not return a null pointer.`
 //
 // We don't have any systems on which we have found that (yet?), but this is proactive
 // in removing our use of `.data()` on potentially empty vectors...

packages/seacas/libraries/ioss/src/exodus/Ioex_DatabaseIO.C

@@ -713,13 +713,7 @@ namespace Ioex {
         // Assume that if it exists on 1 processor, it exists on
         // all... Sync value among processors since could have a
         // corrupt step on only a single database.
-
-        // TODO? -- use gather instead so know what ranks have `last_time`
-        // larger than the minimum.  Can then output a warning saying which
-        // ranks have "corrupt" steps.
-        std::vector<double> last_times;
-        util().gather(last_time, last_times);
-        last_time = *std::min_element(last_times.begin(), last_times.end());
+        last_time = util().global_minmax(last_time, Ioss::ParallelUtils::DO_MIN);
       }
 
       // Only add states that are less than or equal to the
@@ -1035,7 +1029,6 @@ namespace Ioex {
               // Ioss stores as 64-bit, read as 32-bit and copy over...
               Ioss::IntVector tmp_map(entity_map.size());
               error = ex_get_id_map(get_file_pointer(), entity_type, Data(tmp_map));
-              std::iota(tmp_map.begin(), tmp_map.end(), 1);
               if (error >= 0) {
                 entity_map.set_map(Data(tmp_map), tmp_map.size(), 0, true);
               }