Fix afl crash when line finish with \0

Author: savalet

src/shell.c

@@ -62,8 +62,7 @@ int shell_loop(env_t *env, int is_a_tty, history_t *history)
             check_basic_error(buffer);
             continue;
         }
-        if (buffer[buffer_len - 1] == '\n')
-            buffer[buffer_len - 1] = '\0';
+        buffer[buffer_len - 1] = '\0';
         U_DEBUG("Buffer [%lu] [%s]\n", buffer_len, buffer);
         visitor(buffer, env, history);
     }

src/tokeniser.c

@@ -50,7 +50,7 @@ token_t get_next_token(ast_ctx_t *ctx)
     char *start;
     int found_token = 0;
 
-    while (isblank(*ctx->str))
+    while (*ctx->str != '\0' && isblank(*ctx->str))
         ctx->str++;
     for (size_t i = 0; i < TOKENS_LIST_SZ; i++) {
         if (u_strncmp(ctx->str, TOKENS_LIST[i].str, TOKENS_LIST[i].sz) == 0) {