From: Matt Corallo <git@bluematt.me>
Date: Wed, 25 Nov 2020 18:25:18 +0000 (-0500)
Subject: [bindings] Be explicit with take_ptr calls
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=93d7a2f4c0193a965fcc9349f45ce4c800593bb9;p=rust-lightning

[bindings] Be explicit with take_ptr calls

If you try to call take_ptr on a pointer to an object which
implements Deref, rustc hits the deref recursion limit.

To avoid this, we can explicitly tell rustc that we want to treat
the pointer as a pointer and call take_ptr on it directly.
---

diff --git a/c-bindings-gen/src/types.rs b/c-bindings-gen/src/types.rs
index 57b51edf0..b1318e72f 100644
--- a/c-bindings-gen/src/types.rs
+++ b/c-bindings-gen/src/types.rs
@@ -790,8 +790,8 @@ impl<'a, 'c: 'a> TypeResolver<'a, 'c> {
 		match full_path {
 			"Result" if !is_ref => {
 				Some(("match ",
-						vec![(".result_ok { true => Ok(".to_string(), format!("(*unsafe {{ Box::from_raw({}.contents.result.take_ptr()) }})", var_name)),
-						     ("), false => Err(".to_string(), format!("(*unsafe {{ Box::from_raw({}.contents.err.take_ptr()) }})", var_name))],
+						vec![(".result_ok { true => Ok(".to_string(), format!("(*unsafe {{ Box::from_raw(<*mut _>::take_ptr(&mut {}.contents.result)) }})", var_name)),
+						     ("), false => Err(".to_string(), format!("(*unsafe {{ Box::from_raw(<*mut _>::take_ptr(&mut {}.contents.err)) }})", var_name))],
 						")}"))
 			},
 			"Vec"|"Slice" if !is_ref => {