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-rw-r--r--src/symbol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/symbol.c b/src/symbol.c
index 8424cecd9..87c4ca11e 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -80,7 +80,7 @@ sym_inline_unpack(mrb_sym sym, char *buf, mrb_int *lenp)
mrb_assert(sym&1);
for (i=0; i<30/bit_per_char; i++) {
- uint32_t bits = sym>>(i*bit_per_char+2) & (1<<bit_per_char)-1;
+ uint32_t bits = sym>>(i*bit_per_char+2) & ((1<<bit_per_char)-1);
if (bits == 0) break;
buf[i] = pack_table[bits-1];;
}