pruned clang-tidy, added splint and cppcheck

.clang-tidy

@@ -1,25 +1,15 @@
 Checks: >
   -*,
   clang-diagnostic-*,
-  clang-analyzer-*,
-  readability-*,
-  -readability-identifier-length,
-  -readability-magic-numbers,
-  -readability-function-cognitive-complexity,
-  bugprone-*,
-  -bugprone-easily-swappable-parameters,
-  misc-*,
-  -misc-unused-parameters,
-  portability-*
+  bugprone-macro-parentheses,
+  bugprone-suspicious-string-compare,
+  bugprone-sizeof-expression,
+  bugprone-signed-char-misuse,
+  cert-dcl37-c,
+  readability-misleading-indentation
 
 WarningsAsErrors: ''
 
 HeaderFilterRegex: '.*'
 
-CheckOptions:
-  - key: readability-function-size.LineThreshold
-    value: '100'
-  - key: readability-function-size.StatementThreshold
-    value: '50'
-
 FormatStyle: none

Makefile

@@ -3,7 +3,7 @@
 
 # Compiler and flags
 CC = gcc
-CFLAGS = -std=c90 -pedantic -Wpedantic -Wall -Wextra
+CFLAGS = -std=c90 -pedantic -Wpedantic -Wall -Wextra -Wstrict-prototypes -Wold-style-definition
 
 # Platform detection
 ifdef COMSPEC
@@ -95,3 +95,26 @@ help:
 	@echo "  - GNU Make"
 
 .PHONY: all clean install uninstall rebuild wordlists help
+
+# Static analysis targets
+analyze: cppcheck
+
+# Relaxed splint (too noisy with +standard)
+splint:
+	@echo "Running splint with relaxed checks..."
+	@splint -weak +posixlib -I./include src/*.c 2>&1 | grep -v "Definition of" || true
+
+# Strict splint (very verbose, use with caution)
+splint-strict:
+	splint +standard -I./include src/*.c
+
+cppcheck:
+	@echo "Running cppcheck..."
+	@cppcheck --std=c90 --enable=warning,style,performance,portability \
+	         --suppress=missingIncludeSystem --quiet -I./include src/
+
+strict-compile:
+	gcc -std=c90 -pedantic -Wpedantic -Wall -Wextra \
+	    -Wstrict-prototypes -Wold-style-definition \
+	    -Wmissing-prototypes -Wdeclaration-after-statement \
+	    -Iinclude -c src/*.c

build.sh

@@ -4,7 +4,7 @@
 mkdir -p build/cordle
 
 echo "Building application."
-gcc -v -std=c90 -pedantic -Wpedantic -o build/cordle/cordle src/*.c -Iinclude -lncurses > build/cordle-build.log 2>&1
+gcc -std=c90 -pedantic -Wpedantic -Wall -Wextra -Wstrict-prototypes -Wold-style-definition
 export RESULT=$?
 
 if (( RESULT == 0 )); then

include/words.h

@@ -5,7 +5,7 @@
 #include "game.h"
 
 int load_words(GameState* game, const char* filename);
-int is_valid_word(GameState* game, const char* word);
+int is_valid_word(const GameState* game, const char* word);
 void to_upper(char* str);
 
 #endif /* WORDS_H */

src/main.c

@@ -15,7 +15,7 @@
 #include "../include/ui.h"
 
 /* Parse command line arguments */
-void parse_arguments(int argc, char *argv[], char *filename, char *difficulty) {
+static void parse_arguments(int argc, char **argv, char *filename, char *difficulty) {
     int i;
 
     /* Default values */
@@ -53,7 +53,7 @@ void parse_arguments(int argc, char *argv[], char *filename, char *difficulty) {
 }
 
 /* Main game loop */
-int main_game_loop(int argc, char *argv[]) {
+static int main_game_loop(int argc, char *argv[]) {
     WINDOW *stdscr;
     GameState game;
     char filename[MAX_FILENAME];

src/ui.c

@@ -31,14 +31,14 @@ void draw_title(WINDOW *win, int y, const char *difficulty) {
 /* Draw the game board */
 void draw_board(WINDOW *win, GameState *game, int y) {
     int width, board_x;
-    int row, col, x_pos, y_pos;
+    int row, col, x_pos;
     char cell[4];
 
     width = getmaxx(win);
     board_x = (width - (WORD_LENGTH * 4 - 1)) / 2;
 
     for (row = 0; row < MAX_GUESSES; row++) {
-        y_pos = y + row * 2;
+        int y_pos = y + row * 2;
 
         if (row < game->guess_count) {
             /* Draw a completed guess */
@@ -77,7 +77,7 @@ void draw_board(WINDOW *win, GameState *game, int y) {
 /* Draw visual keyboard */
 void draw_keyboard(WINDOW *win, GameState *game, int y) {
     int width;
-    int row_idx, x, y_pos, i;
+    int row_idx, i;
     const char *row;
     char letter;
     int status, color;
@@ -85,6 +85,7 @@ void draw_keyboard(WINDOW *win, GameState *game, int y) {
     width = getmaxx(win);
 
     for (row_idx = 0; row_idx < 3; row_idx++) {
+        int x, y_pos;
         row = keyboard_rows[row_idx];
         x = (width - strlen(row) * 2 + 1) / 2;
         y_pos = y + row_idx;

src/words.c

@@ -56,7 +56,6 @@ int load_words(GameState *game, const char *filename) {
     FILE *file;
     char line[32];
     char word[WORD_LENGTH + 1];
-    int len;
 
     /* Try to open the file */
     file = open_wordlist(filename);
@@ -67,7 +66,7 @@ int load_words(GameState *game, const char *filename) {
     game->word_count = 0;
     while (fgets(line, sizeof(line), file) && game->word_count < MAX_WORDS) {
         /* Remove newline and whitespace */
-        len = strlen(line);
+        int len = strlen(line);
         while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r' || line[len - 1] == ' ')) {
             line[--len] = '\0';
         }
@@ -94,7 +93,7 @@ int load_words(GameState *game, const char *filename) {
 }
 
 /* Check if word exists in a word list */
-int is_valid_word(GameState *game, const char *word) {
+int is_valid_word(const GameState *game, const char *word) {
     int i;
     char upper_word[WORD_LENGTH + 1];