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-rw-r--r--src/gf_w64.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gf_w64.c b/src/gf_w64.c
index 91f53d6..74e5e9e 100644
--- a/src/gf_w64.c
+++ b/src/gf_w64.c
@@ -994,7 +994,7 @@ int gf_w64_group_init(gf_t *gf)
gd->reduce = gd->shift + (1 << g_s);
gd->reduce[0] = 0;
- for (i = 0; i < (1 << g_r); i++) {
+ for (i = 0; i < ((uint64_t)1 << g_r); i++) {
p = 0;
index = 0;
for (j = 0; j < g_r; j++) {