> compile NEMU

221220000 张三
Linux zzy 5.15.146.1-microsoft-standard-WSL2 #1 SMP Thu Jan 11 04:09:03 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
 11:02:49 up  1:42,  1 user,  load average: 0.11, 0.22, 0.22

abstract-machine/klib/src/stdio.c

@@ -96,24 +96,27 @@ static int rvsnprintf(char* out, size_t n, const char* fmt, va_list ap) {
     char* _out = out;
     size_t _n = n;
     const char* _fmt = fmt;
-    bool end = false;
-    while (n && !end) {
+    while (_n) {
         switch (*_fmt) {
             case '\0':
                 *_out = *_fmt;
-                end = true;
+                _n = 0;
+                break;
             case '%':
-                _fmt ++;
                 int len = fmt_match(_out, _n, _fmt, ap);
-                _out += len - 1;
-                _n -= len + 1;
+                _out += len;
+                _n -= len;
+                _fmt += 2;
                 break;
             default:
                 *_out = *_fmt;
+                _out ++;
+                _fmt ++;
+                _n ++;
                 break;
         }
     }
-    assert(*out == '\0');
+    assert(*_out == '\0');
     return 1;
 }