Eliminate a large number of bogus warnings during compilation.
Eliminate many bogus warnings produced during compilation of tcc by gcc,
primarily by adding casts but in some cases by changing type
declarations (esp. for hashes).  Many bogus warnings make it difficult
to see the warnings that ARE important.

diff -ur tinycc-rl-1.0.0/config.mak tinycc-warning/config.mak
--- tinycc-rl-1.0.0/config.mak	2007-05-09 11:59:02.000000000 -0400
+++ tinycc-warning/config.mak	2007-05-09 14:58:59.000000000 -0400
@@ -18,4 +18,4 @@
 EXESUF=
 ARCH=i386
 VERSION=0.9.23
-SRC_PATH=/home/dwheeler/temp/tinycc-rl-1.0.0
+SRC_PATH=/home/dwheeler/temp/tinycc-warning
diff -ur tinycc-rl-1.0.0/tccasm.c tinycc-warning/tccasm.c
--- tinycc-rl-1.0.0/tccasm.c	2007-04-18 14:52:22.000000000 -0400
+++ tinycc-warning/tccasm.c	2007-05-09 16:37:40.000000000 -0400
@@ -715,8 +715,8 @@
     bf = tcc_malloc(sizeof(BufferedFile));
     memset(bf, 0, sizeof(BufferedFile));
     bf->fd = -1;
-    bf->buf_ptr = str;
-    bf->buf_end = str + len;
+    bf->buf_ptr = (uint8_t *) str;
+    bf->buf_end = (uint8_t *) str + len;
     str[len] = CH_EOB;
     /* same name as current file so that errors are correctly
        reported */
diff -ur tinycc-rl-1.0.0/tcc.c tinycc-warning/tcc.c
--- tinycc-rl-1.0.0/tcc.c	2007-04-18 14:52:22.000000000 -0400
+++ tinycc-warning/tcc.c	2007-05-09 16:01:02.000000000 -0400
@@ -1884,7 +1884,7 @@
 
     h = TOK_HASH_INIT;
     h = TOK_HASH_FUNC(h, type);
-    s = filename;
+    s = (unsigned char *) filename;
     while (*s) {
         h = TOK_HASH_FUNC(h, *s);
         s++;
@@ -2825,7 +2825,7 @@
                     goto token_found;
                 pts = &(ts->hash_next);
             }
-            ts = tok_alloc_new(pts, p1, len);
+            ts = tok_alloc_new(pts, (char *) p1, len);
         token_found: ;
         } else {
             /* slower case */
@@ -8641,8 +8641,8 @@
         return -1;
     memcpy(buf, str, len);
     buf[len] = CH_EOB;
-    bf->buf_ptr = buf;
-    bf->buf_end = buf + len;
+    bf->buf_ptr = (uint8_t *) buf;
+    bf->buf_end = (uint8_t *) buf + len;
     pstrcpy(bf->filename, sizeof(bf->filename), "<string>");
     bf->line_num = 1;
     file = bf;
@@ -8661,17 +8661,17 @@
 {
     BufferedFile bf1, *bf = &bf1;
 
-    pstrcpy(bf->buffer, IO_BUF_SIZE, sym);
-    pstrcat(bf->buffer, IO_BUF_SIZE, " ");
+    pstrcpy((char *) bf->buffer, IO_BUF_SIZE, sym);
+    pstrcat((char *) bf->buffer, IO_BUF_SIZE, " ");
     /* default value */
     if (!value) 
         value = "1";
-    pstrcat(bf->buffer, IO_BUF_SIZE, value);
+    pstrcat((char *)bf->buffer, IO_BUF_SIZE, value);
     
     /* init file structure */
     bf->fd = -1;
     bf->buf_ptr = bf->buffer;
-    bf->buf_end = bf->buffer + strlen(bf->buffer);
+    bf->buf_end = bf->buffer + strlen((char *) bf->buffer);
     *bf->buf_end = CH_EOB;
     bf->filename[0] = '\0';
     bf->line_num = 1;
diff -ur tinycc-rl-1.0.0/tccelf.c tinycc-warning/tccelf.c
--- tinycc-rl-1.0.0/tccelf.c	2007-04-18 14:52:22.000000000 -0400
+++ tinycc-warning/tccelf.c	2007-05-09 16:44:08.000000000 -0400
@@ -50,10 +50,11 @@
 static void rebuild_hash(Section *s, unsigned int nb_buckets)
 {
     Elf32_Sym *sym;
-    int *ptr, *hash, nb_syms, sym_index, h;
+    int *ptr, *hash, nb_syms, sym_index;
+    unsigned long h;
     char *strtab;
 
-    strtab = s->link->data;
+    strtab = (char*) s->link->data;
     nb_syms = s->data_offset / sizeof(Elf32_Sym);
 
     s->hash->data_offset = 0;
@@ -68,7 +69,7 @@
     sym = (Elf32_Sym *)s->data + 1;
     for(sym_index = 1; sym_index < nb_syms; sym_index++) {
         if (ELF32_ST_BIND(sym->st_info) != STB_LOCAL) {
-            h = elf_hash(strtab + sym->st_name) % nb_buckets;
+            h = elf_hash((unsigned char *) strtab + sym->st_name) % nb_buckets;
             *ptr = hash[h];
             hash[h] = sym_index;
         } else {
@@ -85,7 +86,8 @@
                        int info, int other, int shndx, const char *name)
 {
     int name_offset, sym_index;
-    int nbuckets, h;
+    int nbuckets;
+    unsigned long h;
     Elf32_Sym *sym;
     Section *hs;
     
@@ -111,7 +113,7 @@
         if (ELF32_ST_BIND(info) != STB_LOCAL) {
             /* add another hashing entry */
             nbuckets = base[0];
-            h = elf_hash(name) % nbuckets;
+            h = elf_hash( (unsigned char *) name) % nbuckets;
             *ptr = base[2 + h];
             base[2 + h] = sym_index;
             base[1]++;
@@ -134,18 +136,19 @@
 {
     Elf32_Sym *sym;
     Section *hs;
-    int nbuckets, sym_index, h;
+    int nbuckets, sym_index;
+    unsigned long h;
     const char *name1;
     
     hs = s->hash;
     if (!hs)
         return 0;
     nbuckets = ((int *)hs->data)[0];
-    h = elf_hash(name) % nbuckets;
+    h = elf_hash( (unsigned char *) name) % nbuckets;
     sym_index = ((int *)hs->data)[2 + h];
     while (sym_index != 0) {
         sym = &((Elf32_Sym *)s->data)[sym_index];
-        name1 = s->link->data + sym->st_name;
+        name1 = (char *) s->link->data + sym->st_name;
         if (!strcmp(name, name1))
             return sym_index;
         sym_index = ((int *)hs->data)[2 + nbuckets + sym_index];
@@ -401,9 +404,9 @@
         sym++) {
         sh_num = sym->st_shndx;
         if (sh_num == SHN_UNDEF) {
-            name = strtab_section->data + sym->st_name;
+            name = (char *) strtab_section->data + sym->st_name;
             if (do_resolve) {
-                name = symtab_section->link->data + sym->st_name;
+                name = (char *) symtab_section->link->data + sym->st_name;
                 addr = (unsigned long)resolve_sym(s1, name, ELF32_ST_TYPE(sym->st_info));
                 if (addr) {
                     sym->st_value = addr;
@@ -725,7 +728,7 @@
 
     if (s1->dynsym) {
         sym = &((Elf32_Sym *)symtab_section->data)[sym_index];
-        name = symtab_section->link->data + sym->st_name;
+        name = (char *) symtab_section->link->data + sym->st_name;
         offset = sym->st_value;
 #ifdef TCC_TARGET_I386
         if (reloc_type == R_386_JMP_SLOT) {
@@ -1191,7 +1194,7 @@
                     sym < sym_end;
                     sym++) {
                     if (sym->st_shndx == SHN_UNDEF) {
-                        name = symtab_section->link->data + sym->st_name;
+                        name = (char*)symtab_section->link->data + sym->st_name;
                         sym_index = find_elf_sym(s1->dynsymtab_section, name);
                         if (sym_index) {
                             esym = &((Elf32_Sym *)s1->dynsymtab_section->data)[sym_index];
@@ -1227,7 +1230,7 @@
                                ELF32_ST_BIND(sym->st_info) != STB_LOCAL) {
                         /* if -rdynamic option, then export all non
                            local symbols */
-                        name = symtab_section->link->data + sym->st_name;
+                        name = (char*)symtab_section->link->data + sym->st_name;
                         put_elf_sym(s1->dynsym, sym->st_value, sym->st_size, 
                                     sym->st_info, 0, 
                                     sym->st_shndx, name);
@@ -1245,7 +1248,7 @@
                     esym < sym_end;
                     esym++) {
                     if (esym->st_shndx == SHN_UNDEF) {
-                        name = s1->dynsymtab_section->link->data + esym->st_name;
+                        name = (char *) s1->dynsymtab_section->link->data + esym->st_name;
                         sym_index = find_elf_sym(symtab_section, name);
                         if (sym_index) {
                             /* XXX: avoid adding a symbol if already
@@ -1272,7 +1275,7 @@
                     sym < sym_end;
                     sym++) {
                     if (ELF32_ST_BIND(sym->st_info) != STB_LOCAL) {
-                        name = symtab_section->link->data + sym->st_name;
+                        name = (char *) symtab_section->link->data + sym->st_name;
                         index = put_elf_sym(s1->dynsym, sym->st_value, sym->st_size, 
                                             sym->st_info, 0, 
                                             sym->st_shndx, name);
@@ -1837,7 +1840,7 @@
         if (i == ehdr.e_shstrndx)
             continue;
         sh = &shdr[i];
-        sh_name = strsec + sh->sh_name;
+        sh_name = (char *) strsec + sh->sh_name;
         /* ignore sections types we do not handle */
         if (sh->sh_type != SHT_PROGBITS &&
             sh->sh_type != SHT_REL && 
@@ -1930,7 +1933,7 @@
                    already defined symbol. It is very important to get
                    correct relocations */
                 if (ELF32_ST_BIND(sym->st_info) != STB_LOCAL) {
-                    name = strtab + sym->st_name;
+                    name = (char *) strtab + sym->st_name;
                     sym_index = find_elf_sym(symtab_section, name);
                     if (sym_index)
                         old_to_new_syms[i] = sym_index;
@@ -1946,7 +1949,7 @@
             sym->st_value += sm->offset;
         }
         /* add symbol */
-        name = strtab + sym->st_name;
+        name = (char *) strtab + sym->st_name;
         sym_index = add_elf_sym(symtab_section, sym->st_value, sym->st_size, 
                                 sym->st_info, sym->st_other, 
                                 sym->st_shndx, name);
@@ -2036,7 +2039,7 @@
         goto fail;
     nsyms = get_be32(data);
     ar_index = data + 4;
-    ar_names = ar_index + nsyms * 4;
+    ar_names = (char *) ar_index + nsyms * 4;
 
     do {
 	bound = 0;
@@ -2175,7 +2178,7 @@
         
     for(i = 0, dt = dynamic; i < nb_dts; i++, dt++) {
         if (dt->d_tag == DT_SONAME) {
-            soname = dynstr + dt->d_un.d_val;
+            soname = (char *) dynstr + dt->d_un.d_val;
         }
     }
 
@@ -2204,7 +2207,7 @@
         sym_bind = ELF32_ST_BIND(sym->st_info);
         if (sym_bind == STB_LOCAL)
             continue;
-        name = dynstr + sym->st_name;
+        name = (char *) dynstr + sym->st_name;
         add_elf_sym(s1->dynsymtab_section, sym->st_value, sym->st_size,
                     sym->st_info, sym->st_other, sym->st_shndx, name);
     }
@@ -2213,7 +2216,7 @@
     for(i = 0, dt = dynamic; i < nb_dts; i++, dt++) {
         switch(dt->d_tag) {
         case DT_NEEDED:
-            name = dynstr + dt->d_un.d_val;
+            name = (char *) dynstr + dt->d_un.d_val;
             for(j = 0; j < s1->nb_loaded_dlls; j++) {
                 dllref = s1->loaded_dlls[j];
                 if (!strcmp(name, dllref->name))