Exclude arc4random_buf implementation if it's already present in the …

…platform (libevent#1375) This patch excludes definition of arc4random_buf on systems where it is already present. When the symbol is found, the macro EVENT__HAVE_ARC4RANDOM_BUF is set via CMake's configure_file(..). Co-authored-by: Azat Khuzhin <[email protected]>
Hotant-Bu · Nov 15, 2022 · 7a18af8 · 7a18af8
1 parent cdeb324
commit 7a18af8
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/arc4random.c b/arc4random.c
@@ -471,6 +471,7 @@ arc4random(void)
 }
 #endif
 
+#ifndef EVENT__HAVE_ARC4RANDOM_BUF
 ARC4RANDOM_EXPORT void
 arc4random_buf(void *buf_, size_t n)
 {
@@ -484,6 +485,7 @@ arc4random_buf(void *buf_, size_t n)
 	}
 	ARC4_UNLOCK_();
 }
+#endif  /* #ifndef EVENT__HAVE_ARC4RANDOM_BUF */
 
 #ifndef ARC4RANDOM_NOUNIFORM
 /*