[PATCH 04/13] rust: do not use --no-size_t-is-usize

[Paolo Bonzini <pbonzini@redhat.com>]

This not necessary and makes it harder to write code that
is portable between 32- and 64-bit systems: it adds extra casts even
though size_of, align_of or offset_of already return the right type.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 meson.build                      | 1 -
 rust/qemu-api/src/definitions.rs | 6 +++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/meson.build b/meson.build
index 44f3bf34931..48f82fd4ba6 100644
--- a/meson.build
+++ b/meson.build
@@ -3932,7 +3932,6 @@ if have_rust and have_system
     '--no-doc-comments',
     '--use-core',
     '--with-derive-default',
-    '--no-size_t-is-usize',
     '--no-layout-tests',
     '--no-prepend-enum-name',
     '--allowlist-file', meson.project_source_root() + '/include/.*',
diff --git a/rust/qemu-api/src/definitions.rs b/rust/qemu-api/src/definitions.rs
index 60bd3f8aaa6..0b681c593f2 100644
--- a/rust/qemu-api/src/definitions.rs
+++ b/rust/qemu-api/src/definitions.rs
@@ -81,13 +81,13 @@ macro_rules! type_info {
             } else {
                 ::core::ptr::null_mut()
             },
-            instance_size: ::core::mem::size_of::<$t>() as $crate::bindings::size_t,
-            instance_align: ::core::mem::align_of::<$t>() as $crate::bindings::size_t,
+            instance_size: ::core::mem::size_of::<$t>(),
+            instance_align: ::core::mem::align_of::<$t>(),
             instance_init: <$t as $crate::definitions::ObjectImpl>::INSTANCE_INIT,
             instance_post_init: <$t as $crate::definitions::ObjectImpl>::INSTANCE_POST_INIT,
             instance_finalize: <$t as $crate::definitions::ObjectImpl>::INSTANCE_FINALIZE,
             abstract_: <$t as $crate::definitions::ObjectImpl>::ABSTRACT,
-            class_size:  ::core::mem::size_of::<<$t as $crate::definitions::ObjectImpl>::Class>() as $crate::bindings::size_t,
+            class_size:  ::core::mem::size_of::<<$t as $crate::definitions::ObjectImpl>::Class>(),
             class_init: <<$t as $crate::definitions::ObjectImpl>::Class as $crate::definitions::Class>::CLASS_INIT,
             class_base_init: <<$t as $crate::definitions::ObjectImpl>::Class as $crate::definitions::Class>::CLASS_BASE_INIT,
             class_data: ::core::ptr::null_mut(),
-- 
2.46.2