Auto merge of #219 - Amanieu:sync_val_compare_and_swap, r=alexcrichton
Fix argument order for __sync_val_compare_and_swap Fixes https://github.com/rust-lang/rust/issues/46822#issuecomment-353698138
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3a9ba44406
@ -71,7 +71,7 @@ unsafe fn atomic_rmw<T, F: Fn(u32) -> u32>(ptr: *mut T, f: F) -> u32 {
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}
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// Generic atomic compare-exchange operation
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unsafe fn atomic_cmpxchg<T>(oldval: u32, newval: u32, ptr: *mut T) -> u32 {
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unsafe fn atomic_cmpxchg<T>(ptr: *mut T, oldval: u32, newval: u32) -> u32 {
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let aligned_ptr = align_ptr(ptr);
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let (shift, mask) = get_shift_mask(ptr);
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@ -99,8 +99,8 @@ macro_rules! atomic_rmw {
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macro_rules! atomic_cmpxchg {
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($name:ident, $ty:ty) => {
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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pub unsafe extern "C" fn $name(oldval: $ty, newval: $ty, ptr: *mut $ty) -> $ty {
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atomic_cmpxchg(oldval as u32, newval as u32, ptr) as $ty
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pub unsafe extern "C" fn $name(ptr: *mut $ty, oldval: $ty, newval: $ty) -> $ty {
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atomic_cmpxchg(ptr, oldval as u32, newval as u32) as $ty
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}
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}
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}
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