diff --git a/rt-thread-version/rt-thread-standard/programming-manual/libc/introduction.md b/rt-thread-version/rt-thread-standard/programming-manual/libc/introduction.md
index 9bec21b4f6ee8b8b29e8e6fca817ba6975c84ba3..cb5da7648d3151456ed74146e65fdd7a891b7f18 100644
--- a/rt-thread-version/rt-thread-standard/programming-manual/libc/introduction.md
+++ b/rt-thread-version/rt-thread-standard/programming-manual/libc/introduction.md
@@ -91,7 +91,7 @@ ANSI C、ISO C、Standard C是指美国国家标准协会（ANSI）和国际标
 |                                                              | [pthread_attr_getschedpolicy()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getschedpolicy.html) |   *   |   *   |   *   |   *   |     √     |
 |                                                              | [pthread_attr_getscope()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getscope.html) |   *   |   *   |   *   |   *   |     √     |
 |                                                              | [pthread_attr_getstack()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getstack.html) |   *   |   *   |   *   |   *   |     √     |
-|                                                              | [pthread_attr_getstackaddr()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getstackaddr.html) |   *   |   *   |   *   |   *   |     √     |
+|                                                              | [pthread_attr_getstackaddr()](https://pubs.opengroup.org/onlinepubs/009696799/functions/pthread_attr_getstackaddr.html) |   *   |   *   |   *   |   *   |     √     |
 |                                                              | [pthread_attr_getstacksize()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_getstacksize.html) |   *   |   *   |   *   |   *   |     √     |
 |                                                              | [pthread_attr_init()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_init.html) |   *   |   *   |   *   |   *   |     √     |
 |                                                              | [pthread_attr_setdetachstate()](https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_attr_setdetachstate.html) |   *   |   *   |   *   |   *   |     √     |