[Mesa-dev] [PATCH 1/2] i965/disk_cache: Add extra unused character in renderer temp string

[Jordan Justen]

This extra character should not be used by snprintf, but we make it
available to verify that we printed the exact number we wanted, and
didn't overflow.

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
 src/mesa/drivers/dri/i965/brw_disk_cache.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_disk_cache.c b/src/mesa/drivers/dri/i965/brw_disk_cache.c
index c478753d4ad..a678c355b9d 100644
--- a/src/mesa/drivers/dri/i965/brw_disk_cache.c
+++ b/src/mesa/drivers/dri/i965/brw_disk_cache.c
@@ -377,10 +377,11 @@ void
 brw_disk_cache_init(struct intel_screen *screen)
 {
 #ifdef ENABLE_SHADER_CACHE
-   char renderer[10];
+   /* array length: print length + null char + 1 extra to verify it is unused */
+   char renderer[11];
    MAYBE_UNUSED int len = snprintf(renderer, sizeof(renderer), "i965_%04x",
                                    screen->deviceID);
-   assert(len == sizeof(renderer) - 1);
+   assert(len == sizeof(renderer) - 2);
 
    const struct build_id_note *note =
       build_id_find_nhdr_for_addr(brw_disk_cache_init);
-- 
2.18.0