libbb: make warning go away

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/libbb/progress.c b/libbb/progress.c
index df43dad5c..372feb0c2 100644
--- a/libbb/progress.c
+++ b/libbb/progress.c
@@ -127,10 +127,12 @@ void FAST_FUNC bb_progress_update(bb_progress_t *p,
                 /* 32-bit CPU and 64-bit off_t.
                  * Use a 40-bit shift, it is easier to do on 32-bit CPU.
                  */
-                if (totalsize >= (uoff_t)(1ULL << 54)) {
-                        totalsize = (uint32_t)(totalsize >> 32) >> 8;
-                        beg_size = (uint32_t)(beg_size >> 32) >> 8;
-                        transferred = (uint32_t)(transferred >> 32) >> 8;
+/* ONE suppresses "warning: shift count >= width of type" */
+#define ONE (sizeof(off_t) > 4)
+                if (totalsize >= (uoff_t)(1ULL << 54*ONE)) {
+                        totalsize = (uint32_t)(totalsize >> 32*ONE) >> 8;
+                        beg_size = (uint32_t)(beg_size >> 32*ONE) >> 8;
+                        transferred = (uint32_t)(transferred >> 32*ONE) >> 8;
                         kiloscale = 4;
                 }
         }