Also check for zero size when testing pointers to objects allocated by malloc().

git-svn-id: http://svn.cactuscode.org/arrangements/CactusNumerical/RotatingSymmetry180/trunk@21 20f44201-0f4f-0410-9130-e5fc2714a787

1 files changed, 4 insertions, 6 deletions

diff --git a/src/interpolate.c b/src/interpolate.c
index edec57c..7e5f218 100644
--- a/src/interpolate.c
+++ b/src/interpolate.c
@@ -141,12 +141,10 @@ Rot180_SymmetryInterpolate (CCTK_POINTER_TO_CONST const cctkGH_,
   new_faces = faces;
   new_faces &= ~ (1 << 0);
   
-  
-  
   /* Copy coordinates */
   for (d=0; d<3; ++d) {
     new_interp_coords[d] = malloc (N_interp_points * sizeof(CCTK_REAL));
-    assert (new_interp_coords[d]);
+    assert (N_interp_points == 0 || new_interp_coords[d]);
     memcpy (new_interp_coords[d], interp_coords[d],
             N_interp_points * sizeof(CCTK_REAL));
   }
@@ -183,7 +181,7 @@ Rot180_SymmetryInterpolate (CCTK_POINTER_TO_CONST const cctkGH_,
   
   /* Find output variable indices */
   operand_indices = malloc (N_output_arrays * sizeof *operand_indices);
-  assert (operand_indices);
+  assert (N_output_arrays == 0 || operand_indices);
   ierr = Util_TableGetIntArray
     (param_table_handle, N_output_arrays, operand_indices, "operand_indices");
   if (ierr == UTIL_ERROR_TABLE_NO_SUCH_KEY) {
@@ -196,7 +194,7 @@ Rot180_SymmetryInterpolate (CCTK_POINTER_TO_CONST const cctkGH_,
   }
   
   operation_codes = malloc (N_output_arrays * sizeof *operation_codes);
-  assert (operation_codes);
+  assert (N_output_arrays == 0 || operation_codes);
   ierr = Util_TableGetIntArray
     (param_table_handle, N_output_arrays, operation_codes, "operation_codes");
   if (ierr == UTIL_ERROR_TABLE_NO_SUCH_KEY) {
@@ -210,7 +208,7 @@ Rot180_SymmetryInterpolate (CCTK_POINTER_TO_CONST const cctkGH_,
   
   output_array_indices
     = malloc (N_output_arrays * sizeof *output_array_indices);
-  assert (output_array_indices);
+  assert (N_output_arrays == 0 || output_array_indices);
   for (m=0; m<N_output_arrays; ++m) {
     assert (operand_indices[m]>=0 && operand_indices[m]<N_input_arrays);
     output_array_indices[m] = input_array_indices[operand_indices[m]];