r.mfilter: check return value of write() (#2737)

addresses -Wunused-result compiler warning
OSGeo · Jan 10, 2023 · 83da642 · 83da642
1 parent 4e4e38f
commit 83da642
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/raster/r.mfilter/execute.c b/raster/r.mfilter/execute.c
@@ -140,7 +140,8 @@ int execute_filter(ROWIO *r, int *out, FILTER *filter, DCELL **cell)
                 *cp++ = bufs[id][mid][i];
 
             /* write row */
-            write(out[id], cellp, buflen);
+            if (write(out[id], cellp, buflen) < 0)
+                G_fatal_error("Error writing temporary file");
 #pragma omp atomic update
             work++;
         }