Detect whether ptr::addr_of is supported by current compiler

dtolnay · Mar 25, 2021 · be89adf · be89adf
1 parent ac64560
commit be89adf
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/build.rs b/build.rs
@@ -56,6 +56,10 @@ fn main() {
     if rustc < 38 {
         println!("cargo:rustc-cfg=anyhow_no_macro_reexport");
     }
+
+    if rustc < 51 {
+        println!("cargo:rustc-cfg=anyhow_no_ptr_addr_of");
+    }
 }
 
 fn compile_probe() -> Option<ExitStatus> {