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-rw-r--r--src/string.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/string.c b/src/string.c
index cde82134..0869bc23 100644
--- a/src/string.c
+++ b/src/string.c
@@ -170,7 +170,11 @@ static const char b64_unmap[] =
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$"
"$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$";
-static inline uint8_t unmap(const uint8_t in) { return b64_unmap[in] - 47; }
+static inline uint8_t
+unmap(const uint8_t in)
+{
+ return (uint8_t)(b64_unmap[in] - 47);
+}
/**
Decode 4 base64 characters to 3 raw bytes.
@@ -181,7 +185,7 @@ decode_chunk(const uint8_t in[4], uint8_t out[3])
out[0] = (uint8_t)(((unmap(in[0]) << 2)) | unmap(in[1]) >> 4);
out[1] = (uint8_t)(((unmap(in[1]) << 4) & 0xF0) | unmap(in[2]) >> 2);
out[2] = (uint8_t)(((unmap(in[2]) << 6) & 0xC0) | unmap(in[3]));
- return 1 + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
+ return 1u + (in[2] != '=') + ((in[2] != '=') && (in[3] != '='));
}
void*