[WIP] u_char to char manual fixups

Author: ac000

Diff for: auto/cc/test

@@ -79,6 +79,9 @@ case $NXT_CC_NAME in
         #NXT_CFLAGS="$NXT_CFLAGS -Wshorten-64-to-32"
         NXT_CFLAGS="$NXT_CFLAGS -Wwrite-strings"
 
+        # OK due to -funsigned-char
+        NXT_CFLAGS="$NXT_CFLAGS -Wno-char-subscripts"
+
         # -O2 enables -fstrict-aliasing and -fstrict-overflow.
         #NXT_CFLAGS="$NXT_CFLAGS -O2"
         NXT_CFLAGS="$NXT_CFLAGS -fno-strict-aliasing"
@@ -126,6 +129,9 @@ case $NXT_CC_NAME in
         # strict-aliasing is always enabled by default in clang
         NXT_CFLAGS="$NXT_CFLAGS -fno-strict-aliasing"
 
+        # OK due to -funsigned-char
+        NXT_CFLAGS="$NXT_CFLAGS -Wno-char-subscripts"
+
         #NXT_CFLAGS="$NXT_CFLAGS -fomit-frame-pointer"
         NXT_CFLAGS="$NXT_CFLAGS -Wstrict-overflow=5"
 

Diff for: src/nxt_main_process.c

@@ -534,7 +534,7 @@ nxt_main_start_process_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
 
     rt = task->thread->runtime;
 
-    app_conf->user.start  = (u_char*)rt->user_cred.user;
+    app_conf->user.start  = (char *)rt->user_cred.user;
     app_conf->user.length = nxt_strlen(rt->user_cred.user);
 
     ret = nxt_conf_map_object(process->mem_pool, conf, nxt_common_app_conf,

Diff for: src/nxt_mem_zone.c

@@ -507,7 +507,7 @@ static void *
 nxt_mem_zone_alloc_small(nxt_mem_zone_t *zone, nxt_mem_zone_slot_t *slot,
     size_t size)
 {
-    char               *p;
+    uint8_t               *p;
     uint8_t              *map;
     nxt_mem_zone_page_t  *page;
 
@@ -822,7 +822,7 @@ static const char *
 nxt_mem_zone_free_chunk(nxt_mem_zone_t *zone, nxt_mem_zone_page_t *page,
     void *p)
 {
-    char               *map;
+    uint8_t               *map;
     uint32_t             size, offset, chunk;
     nxt_mem_zone_page_t  *pg, **ppg;
     nxt_mem_zone_slot_t  *slot;
@@ -843,7 +843,7 @@ nxt_mem_zone_free_chunk(nxt_mem_zone_t *zone, nxt_mem_zone_page_t *page,
 
     if (nxt_mem_zone_page_bitmap(zone, slot)) {
         /* A page's chunks bitmap is placed at the start of the page. */
-        map = (char *) ((uintptr_t) p & ~((uintptr_t) zone->page_size_mask));
+        map = (uint8_t *) ((uintptr_t) p & ~((uintptr_t) zone->page_size_mask));
 
     } else {
         map = page->u.map;

Diff for: src/nxt_sockaddr.c

@@ -8,7 +8,7 @@
 
 
 #if (NXT_INET6)
-static char *nxt_inet6_ntop(char *addr, char *buf, char *end);
+static char *nxt_inet6_ntop(uint8_t *addr, char *buf, char *end);
 #endif
 
 static nxt_sockaddr_t *nxt_sockaddr_unix_parse(nxt_mp_t *mp, nxt_str_t *addr);
@@ -432,7 +432,7 @@ nxt_sockaddr_cmp(nxt_sockaddr_t *sa1, nxt_sockaddr_t *sa2)
 #if (NXT_INET6)
 
 static char *
-nxt_inet6_ntop(char *addr, char *buf, char *end)
+nxt_inet6_ntop(uint8_t *addr, char *buf, char *end)
 {
     char       *p;
     size_t       zero_groups, last_zero_groups, ipv6_bytes;
@@ -823,7 +823,8 @@ nxt_inet_addr(char *buf, size_t length)
 nxt_int_t
 nxt_inet6_addr(struct in6_addr *in6_addr, char *buf, size_t length)
 {
-    char      c, *addr, *zero_start, *ipv4, *dst, *src, *end;
+    char      c, *ipv4, *end;
+    uint8_t  *addr, *zero_start, *src, *dst;
     nxt_uint_t  digit, group, nibbles, groups_left;
 
     if (length == 0) {
@@ -850,8 +851,8 @@ nxt_inet6_addr(struct in6_addr *in6_addr, char *buf, size_t length)
             if (nibbles != 0) {
                 ipv4 = buf;
 
-                *addr++ = (u_char) (group >> 8);
-                *addr++ = (u_char) (group & 0xFF);
+                *addr++ = (uint8_t) (group >> 8);
+                *addr++ = (uint8_t) (group & 0xFF);
                 groups_left--;
 
                 if (groups_left != 0) {

Diff for: src/nxt_websocket_accept.c

@@ -53,14 +53,14 @@ nxt_websocket_base64_encode(char *d, const uint8_t *s, size_t len)
 void
 nxt_websocket_accept(char *accept, const void *key)
 {
-    char             bin_accept[20];
+    uint8_t            bin_accept[20];
     nxt_sha1_t         ctx;
     static const char  accept_guid[] = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
 
     nxt_sha1_init(&ctx);
     nxt_sha1_update(&ctx, key, 24);
     nxt_sha1_update(&ctx, accept_guid, nxt_length(accept_guid));
-    nxt_sha1_final(bin_accept, &ctx);
+    nxt_sha1_final((char *)bin_accept, &ctx);
 
     nxt_websocket_base64_encode(accept, bin_accept, sizeof(bin_accept));
 }