seems to be the one

Author: devnexen

src/unix/solarish/mod.rs

@@ -3203,7 +3203,7 @@ extern "C" {
 
     pub fn secure_getenv(name: *const c_char) -> *mut c_char;
 
-    #[link(name = "__strftime_xpg4")]
+    #[cfg_attr(target_os = "solaris", link(name = "__strftime_xpg7"))]
     pub fn strftime(
         s: *mut c_char,
         maxsize: size_t,