Remove unused values and functions in LibCN

Author: ZippeyKeys12

.github/workflows/style.yml

@@ -96,7 +96,7 @@ jobs:
 
       - name: Check Clang warnings
         run: |
-          find runtime/libcn/ -iname '*.c' | xargs clang-19 -I runtime/libcn/include/ -fsyntax-only -Werror
+          find runtime/libcn/ -iname '*.c' | xargs clang-19 -I runtime/libcn/include/ -fsyntax-only -Werror -Wall
 
   gcc-warnings:
     name: GCC warnings
@@ -115,7 +115,7 @@ jobs:
 
       - name: Check GCC warnings
         run: |
-          find runtime/libcn/ -iname '*.c' | xargs gcc -I runtime/libcn/include/ -fsyntax-only -Werror
+          find runtime/libcn/ -iname '*.c' | xargs gcc -I runtime/libcn/include/ -fsyntax-only -Werror -Wall
 
   shellcheck:
     name: ShellCheck

runtime/libcn/lib/compile.sh

@@ -2,7 +2,7 @@
 
 FLAGS=""
 if [[ -n "${GITHUB_ACTIONS+isset}" ]]; then
-    FLAGS="-Werror"
+    FLAGS="-Werror -Wall"
 fi
 
 cc ${FLAGS} -I ../../include/ -c -g "$@"

runtime/libcn/src/cn-executable/alloc.c

@@ -248,10 +248,6 @@ static inline uint32_t fl_offset(block_header* fl) {
   return (uintptr_t)fl - (uintptr_t)block_list;
 }
 
-static inline free_block_header* fl_by_offset(uint32_t offset) {
-  return (free_block_header*)((uintptr_t)block_list + offset);
-}
-
 static inline free_block_header* fl_next_free_node(free_block_header* fl) {
   if (fl->next > MAX_BLOCK_INDEX) {
     return NULL;

runtime/libcn/src/cn-executable/utils.c

@@ -291,7 +291,7 @@ void dump_ownership_state() {
   hash_table_iterator it = ht_iterator(cn_ownership_global_ghost_state);
   // cn_printf(CN_LOGGING_INFO, "BEGIN ownership state\n");
   while (ht_next(&it)) {
-    int depth = it.value ? *(int*)it.value : -1;
+    // int depth = it.value ? *(int*)it.value : -1;
     // cn_printf(CN_LOGGING_INFO, "[%#lx] => depth: %d\n", *it.key, depth);
   }
   // cn_printf(CN_LOGGING_INFO, "END\n");

runtime/libcn/src/cn-testing/alloc.c

@@ -186,8 +186,6 @@ int cn_gen_ownership_check(void* p, size_t sz) {
     return 1;
   }
 
-  int bytes = sz;
-
   struct pointer_data* q =
       (struct pointer_data*)((uintptr_t)ownership_curr - sizeof(struct pointer_data));
   for (; (uintptr_t)q >= (uintptr_t)ownership_buf; q--) {

runtime/libcn/src/cn-testing/rand.c

@@ -293,7 +293,6 @@ void cn_gen_shuffle(void* arr, size_t len, size_t size) {
   // byte size is implementation-defined (6.5.3.4, bullet 2)
   // but `sizeof(char) == 1` is guaranteed.
   char tmp[size];
-  char* p = arr;
 
   for (int i = len - 1; i >= 0; i--) {
     uint8_t j = cn_gen_range_u8(0, i + 1);
@@ -303,17 +302,6 @@ void cn_gen_shuffle(void* arr, size_t len, size_t size) {
   }
 }
 
-static int comp_size_t(const void* x, const void* y) {
-  size_t a = *(const size_t*)x;
-  size_t b = *(const size_t*)y;
-
-  if (a < b)
-    return -1;
-  if (b > a)
-    return 1;
-  return 0;
-}
-
 void cn_gen_split(size_t n, size_t* arr[], size_t len) {
   if (len == 1) {
     *(arr[0]) = n;

runtime/libcn/src/cn-testing/test.c

@@ -178,6 +178,9 @@ size_t cn_gen_compute_size(enum cn_gen_sizing_strategy strategy,
       }
 
       return max_size + 1;
+
+    default:
+      assert(false);
   }
 }