Testing out alignment in emscripten

Author: faern

src/unix/notbsd/emscripten.rs

@@ -72,32 +72,45 @@ s! {
         __unused5: *mut ::c_void,
     }
 
+    #[cfg_attr(feature = "align", repr(align(8)))]
     pub struct pthread_mutex_t {
+        #[cfg(not(feature = "align"))]
         __align: [::c_long; 0],
         size: [u8; __SIZEOF_PTHREAD_MUTEX_T],
     }
 
+    #[cfg_attr(feature = "align", repr(align(8)))]
     pub struct pthread_rwlock_t {
+        #[cfg(not(feature = "align"))]
         __align: [::c_long; 0],
         size: [u8; __SIZEOF_PTHREAD_RWLOCK_T],
     }
 
+    #[cfg_attr(feature = "align", repr(align(4)))]
     pub struct pthread_mutexattr_t {
+        #[cfg(not(feature = "align"))]
         __align: [::c_int; 0],
         size: [u8; __SIZEOF_PTHREAD_MUTEXATTR_T],
     }
 
+    #[cfg_attr(feature = "align", repr(align(4)))]
     pub struct pthread_rwlockattr_t {
+        #[cfg(not(feature = "align"))]
         __align: [::c_int; 0],
         size: [u8; __SIZEOF_PTHREAD_RWLOCKATTR_T],
     }
 
+    #[cfg_attr(all(feature = "align", target_pointer_width = "32"), repr(align(4)))]
+    #[cfg_attr(all(feature = "align", target_pointer_width = "64"), repr(align(8)))]
     pub struct pthread_cond_t {
+        #[cfg(not(feature = "align"))]
         __align: [*const ::c_void; 0],
         size: [u8; __SIZEOF_PTHREAD_COND_T],
     }
 
+    #[cfg_attr(feature = "align", repr(align(4)))]
     pub struct pthread_condattr_t {
+        #[cfg(not(feature = "align"))]
         __align: [::c_int; 0],
         size: [u8; __SIZEOF_PTHREAD_CONDATTR_T],
     }
@@ -748,14 +761,17 @@ pub const RTLD_NOW: ::c_int = 0x2;
 pub const TCP_MD5SIG: ::c_int = 14;
 
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
+    #[cfg(not(feature = "align"))]
     __align: [],
     size: [0; __SIZEOF_PTHREAD_MUTEX_T],
 };
 pub const PTHREAD_COND_INITIALIZER: pthread_cond_t = pthread_cond_t {
+    #[cfg(not(feature = "align"))]
     __align: [],
     size: [0; __SIZEOF_PTHREAD_COND_T],
 };
 pub const PTHREAD_RWLOCK_INITIALIZER: pthread_rwlock_t = pthread_rwlock_t {
+    #[cfg(not(feature = "align"))]
     __align: [],
     size: [0; __SIZEOF_PTHREAD_RWLOCK_T],
 };