Merge pull request #756 from rust-embedded/repr-c

Mark all Vector unions as repr(C). Fixes #755.

Author: burrbull

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+- Mark `Vector` union as `repr(C)`
+
 ## [v0.30.2] - 2023-10-22
 
 - Fix documentation warnings

src/generate/interrupt.rs

@@ -133,6 +133,7 @@ pub fn render(
                 }
 
                 #[doc(hidden)]
+                #[repr(C)]
                 pub union Vector {
                     _handler: unsafe extern "C" fn(),
                     _reserved: u32,
@@ -167,6 +168,7 @@ pub fn render(
                 }
 
                 #[doc(hidden)]
+                #[repr(C)]
                 pub union Vector {
                     _handler: unsafe extern "msp430-interrupt" fn(),
                     _reserved: u16,
@@ -201,6 +203,7 @@ pub fn render(
                 }
 
                 #[doc(hidden)]
+                #[repr(C)]
                 pub union Vector {
                     pub _handler: unsafe extern "C" fn(),
                     pub _reserved: usize,
@@ -233,6 +236,7 @@ pub fn render(
                 }
 
                 #[doc(hidden)]
+                #[repr(C)]
                 pub union Vector {
                     pub _handler: unsafe extern "C" fn(),
                     _reserved: u32,