Fix some conversion warnings

3 files changed, 7 insertions, 7 deletions

diff --git a/src/n3.c b/src/n3.c
index a4a00702..fbe3c392 100644
--- a/src/n3.c
+++ b/src/n3.c
@@ -310,14 +310,14 @@ read_ws_star(SerdReader* reader)
 }
 
 static inline bool
-peek_delim(SerdReader* reader, const char delim)
+peek_delim(SerdReader* reader, const uint8_t delim)
 {
   read_ws_star(reader);
   return peek_byte(reader) == delim;
 }
 
 static inline bool
-eat_delim(SerdReader* reader, const char delim)
+eat_delim(SerdReader* reader, const uint8_t delim)
 {
   if (peek_delim(reader, delim)) {
     eat_byte_safe(reader, delim);
diff --git a/src/stack.h b/src/stack.h
index fef33390..ac30658c 100644
--- a/src/stack.h
+++ b/src/stack.h
@@ -47,7 +47,7 @@ serd_stack_new(size_t size)
 }
 
 static inline bool
-serd_stack_is_empty(SerdStack* stack)
+serd_stack_is_empty(const SerdStack* stack)
 {
   return stack->size <= SERD_STACK_BOTTOM;
 }
diff --git a/src/string_utils.h b/src/string_utils.h
index ac2b40c5..a5dad100 100644
--- a/src/string_utils.h
+++ b/src/string_utils.h
@@ -84,7 +84,7 @@ is_print(const int c)
 }
 
 static inline bool
-is_base64(const uint8_t c)
+is_base64(const int c)
 {
   return is_alpha(c) || is_digit(c) || c == '+' || c == '/' || c == '=';
 }
@@ -146,9 +146,9 @@ utf8_num_bytes(const uint8_t c)
 static inline uint32_t
 parse_counted_utf8_char(const uint8_t* utf8, size_t size)
 {
-  uint32_t c = utf8[0] & ((1u << (8 - size)) - 1);
+  uint32_t c = utf8[0] & ((1u << (8u - size)) - 1u);
   for (size_t i = 1; i < size; ++i) {
-    const uint8_t in = utf8[i] & 0x3F;
+    const uint8_t in = utf8[i] & 0x3Fu;
     c                = (c << 6) | in;
   }
   return c;
@@ -166,7 +166,7 @@ parse_utf8_char(const uint8_t* utf8, size_t* size)
     return parse_counted_utf8_char(utf8, *size);
   default:
     *size = 0;
-    return 0;
+    return 0u;
   }
 }