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-rw-r--r--xdiff/xdiffi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/xdiff/xdiffi.c b/xdiff/xdiffi.c
index 1ebab687f7..da67c04357 100644
--- a/xdiff/xdiffi.c
+++ b/xdiff/xdiffi.c
@@ -26,7 +26,7 @@
#define XDL_MAX_COST_MIN 256
#define XDL_HEUR_MIN_COST 256
-#define XDL_LINE_MAX (long)((1UL << (8 * sizeof(long) - 1)) - 1)
+#define XDL_LINE_MAX (long)((1UL << (CHAR_BIT * sizeof(long) - 1)) - 1)
#define XDL_SNAKE_CNT 20
#define XDL_K_HEUR 4