From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 8 Feb 2024 18:15:08 +0000 (-0700)
Subject: Fix 64-bit compilation with old PETSc versions.
X-Git-Tag: relicensing~60^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F16609%2Fhead;p=dealii.git

Fix 64-bit compilation with old PETSc versions.
---

diff --git a/source/lac/petsc_communication_pattern.cc b/source/lac/petsc_communication_pattern.cc
index 563a1d2bef..19ff745bbe 100644
--- a/source/lac/petsc_communication_pattern.cc
+++ b/source/lac/petsc_communication_pattern.cc
@@ -204,8 +204,12 @@ namespace PETScWrappers
     const PetscInt *ranges;
     AssertPETSc(PetscLayoutGetRanges(layout, &ranges));
 
-    PetscInt    cnt   = 0;
+    PetscInt cnt = 0;
+#  if DEAL_II_PETSC_VERSION_GTE(3, 13, 0)
     PetscMPIInt owner = 0;
+#  else
+    PetscInt owner = 0;
+#  endif
     for (const auto idx : inidx)
       {
         // short-circuit the search if the last owner owns this index too