commit dc62d713bc3c5bb3e4cbb812c02e5d698194afea
author David Tolnay <dtolnay@gmail.com> Fri Dec 11 13:51:53 2020 -0800
committer David Tolnay <dtolnay@gmail.com> Fri Dec 11 13:53:17 2020 -0800
tree d0cac088c8a0c9d48117736d6a40ceaf7b582ce0
parent 2b3117f5082f06f8ff146c06b05262eb9e548f42

Expose Vec capacity to C++

src/symbols/rust_vec.rs

diff --git a/src/symbols/rust_vec.rs b/src/symbols/rust_vec.rs
index 4f4b6ff..6aa0b76 100644
--- a/src/symbols/rust_vec.rs
+++ b/src/symbols/rust_vec.rs
@@ -30,6 +30,12 @@
                 }
             }
             attr! {
+                #[export_name = concat!("cxxbridge1$rust_vec$", $segment, "$capacity")]
+                unsafe extern "C" fn __capacity(this: *const RustVec<$ty>) -> usize {
+                    (*this).repr.capacity()
+                }
+            }
+            attr! {
                 #[export_name = concat!("cxxbridge1$rust_vec$", $segment, "$data")]
                 unsafe extern "C" fn __data(this: *const RustVec<$ty>) -> *const $ty {
                     (*this).repr.as_ptr()