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-rw-r--r--src/dump.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/dump.c b/src/dump.c
index 10b6d9dec..76508a27e 100644
--- a/src/dump.c
+++ b/src/dump.c
@@ -1043,7 +1043,7 @@ sym_operator_name(const char *sym_name, mrb_int len)
for (start = 0; table_size != 0; table_size/=2) {
idx = start+table_size/2;
op_sym = &operator_table[idx];
- cmp = len-op_sym->sym_name_len;
+ cmp = (int)(len-op_sym->sym_name_len);
if (cmp == 0) {
cmp = memcmp(sym_name, op_sym->sym_name, len);
if (cmp == 0) return op_sym->name;