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-rw-r--r--src/core/transport/chttp2/varint.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/core/transport/chttp2/varint.h b/src/core/transport/chttp2/varint.h
index 4dfcc76773..970d1e17e2 100644
--- a/src/core/transport/chttp2/varint.h
+++ b/src/core/transport/chttp2/varint.h
@@ -50,7 +50,8 @@ void grpc_chttp2_hpack_write_varint_tail(gpr_uint32 tail_value,
/* maximum value that can be bitpacked with the opcode if the opcode has a
prefix
of length prefix_bits */
-#define GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits) ((1 << (8 - (prefix_bits))) - 1)
+#define GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits) \
+ ((gpr_uint32)((1 << (8 - (prefix_bits))) - 1))
/* length required to bitpack a value */
#define GRPC_CHTTP2_VARINT_LENGTH(n, prefix_bits) \
@@ -65,7 +66,7 @@ void grpc_chttp2_hpack_write_varint_tail(gpr_uint32 tail_value,
if ((length) == 1u) { \
(tgt)[0] = (gpr_uint8)((prefix_or) | (n)); \
} else { \
- (tgt)[0] = (prefix_or) | GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits); \
+ (tgt)[0] = (prefix_or) | (gpr_uint8)GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits); \
grpc_chttp2_hpack_write_varint_tail( \
(n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits), (tgt) + 1, (length)-1); \
} \