1 files changed, 4 insertions, 0 deletions
diff --git a/src/H5FDint.c b/src/H5FDint.c
index b651c23..8c93f1c 100644
--- a/src/H5FDint.c
+++ b/src/H5FDint.c
@@ -215,6 +215,10 @@ H5FD_write(H5FD_t *file, H5FD_mem_t type, haddr_t addr, size_t size, const void
     HDassert(file->cls);
     HDassert(buf);
 
+    /* Make sure this isn't being called on a read-only VFD */
+    if (!file->cls->write)
+        HGOTO_ERROR(H5E_VFL, H5E_WRITEERROR, FAIL, "write request made to read-only VFD")
+
     /* Get proper DXPL for I/O */
     dxpl_id = H5CX_get_dxpl();