avoid ptr::write which might panic in debug mode
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5e06435c29
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@ -137,11 +137,12 @@ pub unsafe extern "aapcs" fn __aeabi_memcpy(dest: *mut u8, src: *const u8, n: us
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pub unsafe extern "aapcs" fn __aeabi_memcpy4(dest: *mut u8, src: *const u8, mut n: usize) {
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use core::ptr;
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// We are guaranteed 4-alignment, so accessing at u32 is okay.
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let mut dest = dest as *mut u32;
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let mut src = src as *mut u32;
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while n >= 4 {
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ptr::write(dest, ptr::read(src));
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*dest = *src;
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dest = dest.offset(1);
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src = src.offset(1);
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n -= 4;
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@ -198,7 +199,7 @@ pub unsafe extern "aapcs" fn __aeabi_memset4(dest: *mut u8, mut n: usize, c: i32
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let c = (byte << 24) | (byte << 16) | (byte << 8) | byte;
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while n >= 4 {
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ptr::write(dest, c);
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*dest = c;
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dest = dest.offset(1);
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n -= 4;
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}
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