diff --git a/chsrc.c b/chsrc.c
index bd5a4ce..30650a8 100644
--- a/chsrc.c
+++ b/chsrc.c
@@ -180,7 +180,7 @@ lets_test_speed_ (source_info* sources, size_t size, const char* target)
       xy_warn ("chsrc: 跳过该站点");
       speed = 0;
     } else {
-      printf (xy_strjoin(3, "chsrc: 测速 ", src.mirror->site , " ... "));
+      printf ("%s",xy_strjoin(3, "chsrc: 测速 ", src.mirror->site , " ... "));
       speed = test_speed_url (url);
     }
     speeds[i] = speed;
@@ -1166,7 +1166,9 @@ os_gentoo_setsrc(char* option)
   char * yuan = xy_strjoin(3,"GENTOO_MIRRORS=\"https://",
                               source.url,
                               "gentoo\"");
-  cmd = xy_strjoin("cat ",yuan," >> /etc/portage/make.conf");
+  cmd = xy_strjoin(3,"cat ",
+                      yuan,
+                      " >> /etc/portage/make.conf");
   chsrc_logcmd(cmd);
   system(cmd);
 
diff --git a/chsrc.h b/chsrc.h
index 284b7d9..b32a930 100644
--- a/chsrc.h
+++ b/chsrc.h
@@ -375,6 +375,7 @@ os_mysys2_sources[] = {
   {&Sohu,      "https://mirrors.sohu.com/msys2/"}
 },
 
+
 /**
  * 2023-09-05 更新
  *
diff --git a/xy.h b/xy.h
index bd99d12..a6d5ba9 100644
--- a/xy.h
+++ b/xy.h
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <assert.h>
+#include <stddef.h>
 
 // #define NDEBUG
 
@@ -46,7 +47,7 @@
   static bool xy_on_macos   = false;
   static bool xy_on_bsds    = false;
 
-  static char* xy_os_devnull = "/dev/null"
+  static char* xy_os_devnull = "/dev/null";
 
   #define xy_useutf8()
 
@@ -74,9 +75,9 @@
 
 #endif
 
-#define putf(n) printf("%f\n", n)
-#define puti(n) printf("%d\n", n)
-#define putb(n) if(n) puts("true"); else puts("false");
+void putf(double n)    {printf("%f\n",  n);}
+void puti(long long n) {printf("%lld\n", n);}
+void putb(bool n)      {if(n) puts("true"); else puts("false");}
 
 #define xy_arylen(x) (sizeof(x) / sizeof(x[0]))
 
@@ -131,7 +132,7 @@ xy_log_ (int level, const char* str)
 
   sprintf (buf, color_fmt_str, str);
   if (to_stderr) {
-    fprintf(stderr, buf);
+    fprintf(stderr, "%s",buf);
   } else {
     puts(buf);
   }