1 files changed, 9 insertions, 3 deletions
diff --git a/src/H5HFcache.c b/src/H5HFcache.c
index fde5a4f..5b50725 100644
--- a/src/H5HFcache.c
+++ b/src/H5HFcache.c
@@ -1655,9 +1655,15 @@ H5HF__cache_dblock_verify_chksum(const void *_image, size_t len, void *_udata)
         /* Update info about direct block */
         udata->decompressed = TRUE;
         len                 = nbytes;
-    } /* end if */
-    else
-        read_buf = (void *)image; /* Casting away const OK - QAK */
+    }
+    else {
+        /* If the data are unfiltered, we just point to the image, which we
+         * never modify. Casting away const is okay here.
+         */
+        H5_GCC_CLANG_DIAG_OFF("cast-qual")
+        read_buf = (void *)image;
+        H5_GCC_CLANG_DIAG_OFF("cast-qual")
+    }
 
     /* Decode checksum */
     chk_size = (size_t)(H5HF_MAN_ABS_DIRECT_OVERHEAD(hdr) - H5HF_SIZEOF_CHKSUM);