From d078c7817130a503f6577e318f96df6521586877 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Tue, 17 Dec 2019 20:07:02 +0100
Subject: [PATCH] fpi: Add paddings to the private structs

---
 libfprint/fpi-assembling.h   | 1 +
 libfprint/fpi-device.h       | 8 ++++++++
 libfprint/fpi-image-device.h | 4 ++++
 libfprint/fpi-usb-transfer.h | 4 ++++
 4 files changed, 17 insertions(+)

diff --git a/libfprint/fpi-assembling.h b/libfprint/fpi-assembling.h
index 295e3159..6e1b7071 100644
--- a/libfprint/fpi-assembling.h
+++ b/libfprint/fpi-assembling.h
@@ -110,6 +110,7 @@ struct fpi_line_asmbl_ctx
   unsigned char (*get_pixel)(struct fpi_line_asmbl_ctx *ctx,
                              GSList                    *line,
                              unsigned int               x);
+  gpointer _padding_dummy[32];
 };
 
 FpImage *fpi_assemble_lines (struct fpi_line_asmbl_ctx *ctx,
diff --git a/libfprint/fpi-device.h b/libfprint/fpi-device.h
index 3d66ee58..fa8ddf15 100644
--- a/libfprint/fpi-device.h
+++ b/libfprint/fpi-device.h
@@ -45,6 +45,10 @@ struct _FpIdEntry
     const gchar *virtual_envvar;
   };
   guint64 driver_data;
+
+  /*< private >*/
+  /* padding for future expansion */
+  gpointer _padding_dummy[16];
 };
 
 /**
@@ -129,6 +133,10 @@ struct _FpDeviceClass
   void (*delete)   (FpDevice * device);
 
   void (*cancel)   (FpDevice *device);
+
+  /*< private >*/
+  /* padding for future expansion */
+  gpointer _padding_dummy[32];
 };
 
 /**
diff --git a/libfprint/fpi-image-device.h b/libfprint/fpi-image-device.h
index 155390de..864cb905 100644
--- a/libfprint/fpi-image-device.h
+++ b/libfprint/fpi-image-device.h
@@ -93,6 +93,10 @@ struct _FpImageDeviceClass
   void          (*change_state) (FpImageDevice      *dev,
                                  FpiImageDeviceState state);
   void          (*deactivate)   (FpImageDevice *dev);
+
+  /*< private >*/
+  /* padding for future expansion */
+  gpointer _padding_dummy[32];
 };
 
 void fpi_image_device_set_bz3_threshold (FpImageDevice *self,
diff --git a/libfprint/fpi-usb-transfer.h b/libfprint/fpi-usb-transfer.h
index 09d22e85..c69acfcb 100644
--- a/libfprint/fpi-usb-transfer.h
+++ b/libfprint/fpi-usb-transfer.h
@@ -101,6 +101,10 @@ struct _FpiUsbTransfer
 
   /* Data free function */
   GDestroyNotify free_buffer;
+
+  /*< private >*/
+  /* padding for future expansion */
+  gpointer _padding_dummy[32];
 };
 
 GType              fpi_usb_transfer_get_type (void) G_GNUC_CONST;